The Genealogy of the Gods and 80,000 Shrines

Japan has 80,507 registered shrines. Counting subsidiary shrines, branch shrines, and small wayside altars, estimates reach 200,000 to 300,000.

That is about 1.5 times the number of convenience stores (about 54,000). Most people in Japan live alongside shrines without ever quite registering the fact.

Shrines can be classified by lineage. The most numerous is the Hachiman lineage, with about 7,800 shrines. They enshrine Emperor Ōjin as their principal deity, and their head shrine is Usa, in Oita Prefecture. No other lineage is spread as widely across the country.

Next come the Shinmei lineage (about 5,300 shrines, dedicated to Amaterasu Ōmikami) and the Suwa lineage (about 5,000, dedicated to Takeminakata-no-kami), then Inari (about 3,000), Tenjin (about 3,900), and Gion (about 3,000). Where each lineage clusters traces the movement of people across the ancient archipelago.

That the Hachiman lineage is the most numerous nationwide suggests a connection to immigrant cultures from the continent during the Kofun period. The concentration of Suwa-lineage shrines in central Japan may reflect the migration route of the Izumo faction after the mythological ceding of the land, the kuniyuzuri.

The distribution of shrines is not accidental. It records thousands of years of arrival, settlement, and the building of faiths on these islands.

A himorogi (神籬; historically himoroki) is a temporary ritual precinct or installation established for the worship of kami. In a common contemporary form, bamboo or sakaki evergreen marks the four corners, a shimenawa rope defines the boundary, and a sakaki branch hung with hei streamers stands at the center. The arrangement is still visible at rites such as jichinsai, the ground-purification ceremony. The central branch may function as a yorishiro, but yorishiro is the broader functional category of an object that receives or marks a kami’s presence; it is not synonymous with the whole himorogi. Iwakura is another distinct term, and a roped sacred rock should not automatically be called a himorogi.

The word itself is ancient. The Nihon Shoki includes the forms amatsu himorogi, shikataki himorogi, and kuma-himorogi. Man’yōshū 11:2657 speaks of “erecting a himoroki at the kamunabi” and writes the word as 紐呂寸. Together with a phonetic gloss in the Nihon Shoki, this supports the older unvoiced pronunciation himoroki rather than modern himorogi. The texts show something temporary that was erected, but do not uniquely determine its materials or structure.

The himorogi has often been described as one form of ritual facility that predates the widespread use of permanent shrine buildings. Yet scholars dispute whether the modern sakaki-centered arrangement can be projected directly into antiquity. The archaeologist Mamoru Sasou argues that the image of the sakaki as a yorishiro reflects medieval and early-modern reading, and proposes reconsidering ancient himorogi as the bounded or screened precincts found at fourth- and fifth-century ritual sites.

It would therefore be overconfident to define a himorogi simply as a building-free prototype of the shrine. What the record supports is the presence of the word in ancient texts and its continued use today for temporary ritual installations. Its ancient material form, and its relationship to the emergence of shrines, remain questions for research across texts and archaeology.

This archive takes the name HIMOROGI as an editorial metaphor for a place where different forms of evidence and interpretation meet. The homepage guide “What is a himorogi?” sets out the definition, the classical evidence, the scholarly disagreement, and the neighboring terms, each with its own sources.

In the shikinen sengū of Ise Grand Shrine, the entire shrine complex is rebuilt on an adjacent plot of land once every twenty years. The rite has been repeated sixty-two times over more than 1,300 years. No comparable institution is known elsewhere, and it is far more than a renovation of buildings.

With each rebuilding, the shrine is reconstructed in exactly the same form, using about 10,000 Japanese cypress logs. The shinmei-zukuri technique uses no nails at all. Thatched roofing and hand-cast metal fittings pass from craftsman to craftsman as living knowledge, carried by the act of rebuilding every twenty years. The craft moves not through drawings but through memory held in the hands.

Why twenty years? Among the many theories, the most persuasive is the generational succession cycle. A craftsman first takes part at twenty, becomes a core practitioner at forty, and sees a last rebuilding at sixty. Twenty years is the shortest interval at which three generations overlap, and that overlap is what keeps the transmission unbroken.

A civilizational philosophy sits at the heart of this. Rather than carving eternity into stone, it houses eternity in wood, dismantles it, and builds again. Not permanence, but cyclicality. Not preservation, but repetition. If the pyramids aspire to eternal stillness, Ise Grand Shrine aspires to eternal motion. It is a fundamentally different design philosophy for a civilization: one that preserves not matter, but process.

The sixty-second rebuilding, in 2013, drew about 14.2 million visitors. For 1,300 years this act of destroying and rebuilding has been repeated. It is not the preservation of a tradition. It is a civilization-scale answer to a question: what is eternity?

The Three Sacred Treasures of Japan are a sword, a jewel, and a mirror. Of the three, the most revered is neither the weapon nor the gemstone. It is the mirror. Why should a flat, reflective surface outrank a blade and a jewel as the supreme emblem of imperial sovereignty?

The Yata no Kagami (八咫鏡) is enshrined at Ise Grand Shrine as the sacred body (goshintai) of Amaterasu Ōmikami. According to the Kojiki, it was forged by the deity Ishikori-dome-no-Mikoto to lure Amaterasu from the Heavenly Rock Cave. When the sun goddess cracked open the stone door, the first thing she saw was her own radiance reflected back at her. The mirror was a device for showing the sun its own light.

The structure runs deep. A mirror emits no light of its own; it receives light from outside and returns it unchanged. Reception and reflection: the same pair that Shinto asks of its adherents, who receive the power of nature and honor it as it is. That a mirror holds the supreme position in a faith with no doctrine, one that venerates nature itself, is no accident. The cross of Christianity, the geometric patterns of Islam, the lotus of Buddhism—the central symbols of other religions are signs that point toward something. A mirror points toward nothing. It reflects whoever stands before it. The mirror is the physical expression of an absence of doctrine: not a sign telling the believer what to believe, but a device that returns the question. That it stands at the apex of the Three Sacred Treasures suggests that Shinto is a religion less of teachings than of questioning.

Across the world, sun worship and mirrors (or reflective surfaces) are joined again and again. In the Inca Empire, gold panels reflected sunlight at the Coricancha temple. The Egyptian goddess Hathor bore a copper mirror. The sacred fire of Zoroastrianism was kindled by focusing sunlight with mirrors. Whether these are universal patterns that arose independently, or traces of a solar-worship culture spreading outward, remains an open question.

Large quantities of bronze mirrors have been excavated from Japanese kofun (burial mounds). More than 500 sankakubuchi shinjūkyō (triangulated-rim deity-and-beast mirrors) have been recovered on their own—a sign that Kofun-period power holders invested the mirror with extraordinary significance. If the mirror was believed to capture sunlight and hold its power even in darkness, the stone chamber of a kofun was a room that sealed eternal sunlight inside.

That a mirror rests in the innermost, most sacred space of a shrine’s main hall may carry an unsettling proposition: what you see is not a god. A god is seeing itself through you.

Plot shrines as points on a map, draw lines between them, and geometric patterns sometimes emerge that are hard to explain away.

The best-known example is the line connecting Ise Grand Shrine (Mie Prefecture) and Izumo Taisha (Shimane Prefecture). At the exact midpoint between the two sanctuaries—a location sometimes called Point Zero—stands Kono Shrine (Moto-Ise, in Miyazu, Kyoto Prefecture). Other old shrines are also said to stand along the same line. Whether that is coincidence or deliberate placement is unsettled.

The concept of ley lines was proposed in England in 1921 by Alfred Watkins, who argued that ancient sacred sites and ruins tend to fall along straight lines. Straight-line alignments can be detected even in random distributions, and the criticism that ley lines are a product of confirmation bias remains strong.

Other rational explanations exist for shrine placement in Japan. Ancient transport routes—ridgeline paths and roads along rivers—tended to run close to straight, and shrines built along them may have fallen into lines of their own. Where shrines were oriented for distant worship (yohai) of a particular mountain, such as Mount Fuji or Mount Miwa, radial and linear arrangements followed naturally.

The point is not whether the geometry is real; it is that people continue to sense a hidden order in where shrines stand. The 80,000 shrines are felt to be not scattered points of worship but a single network laid over the archipelago.

More than 80,000 shrines may have served not only as places of worship but as the infrastructure of ancient society.

The most direct function was communication. Signal fires (noroshi) had been used since antiquity, and shrine sites—many of them on mountainsides or hilltops with long views—made ideal relay points for such a network. Some researchers suggest that urgent dispatches from Ise Grand Shrine to the imperial court in Yamato may have traveled through it.

Disaster is a second thread. After the Great East Japan Earthquake of 2011, an analysis that laid tsunami inundation zones over shrine locations drew wide attention. Many shrines stood exactly at the limit of the tsunami’s reach, or just beyond it. One reading is that memories of earlier tsunamis shaped where shrines were built.

Festivals had a further, less obvious effect: they mixed populations. The annual shrine festival brought together people from surrounding villages who otherwise had no contact. Utagaki, the poetic courtship gatherings held on festival nights, may have worked as a social mechanism for avoiding consanguineous marriage and maintaining genetic diversity. Shrines may also have been instruments for managing the gene pool.

Taken together, the network of 80,000 shrines looks less like a collection of religious facilities than like an archipelago-wide infrastructure that carried communication, disaster preparedness, and genetic diversity. Just as the modern internet is a network of information and communication, shrines may have been a network connecting people, nature, and the divine.

At the entrance to every shrine, two beasts face the visitor: one with mouth agape, “a,” and one with mouth closed, “un.” They are called komainu. But the faces are not canine. Maned and fanged, they are lions. There has never been a lion in Japan. Why, then, do lions sit at the gates of 80,000 shrines?

The answer lies at the western end of the Silk Road. In ancient Persia, lion statues were customarily placed at the entrances of palaces and temples; the 120 lion reliefs lining Mesopotamia’s Ishtar Gate (c. 575 BCE) are a large-scale example. The lion as guardian of sacred precincts traveled eastward with the spread of Buddhism. The motif was carved on Ashoka’s pillars in India (3rd century BCE), became the Tang stone lion in China, crossed the Korean Peninsula, and reached Japan as shishi-komainu, or lion-dogs.

The pairing itself emerged on the way to Japan. Chinese stone lions do not distinguish between “a” and “un.” The open-mouthed shishi and the closed-mouthed komainu encode the first and last sounds of Sanskrit, the beginning and end of the universe. This is a distinctly Japanese reinterpretation. China’s paired lions wear the same expression; only in Japan does a single pair carry the opposition of open and closed, beginning and end. The reading could not have arisen without esoteric Buddhist thought as an intermediary—evidence that Japan did not simply receive culture but reinvented it.

Further south stand Okinawa’s shisa, also descendants of the lion. Born from the fusion of southern Chinese feng shih ye (wind lions) and Ryukyuan stone lions, shisa guard rooftops as talismans against evil. The mainland route (Persia to China to Korea to Japan) and the southern route (southern China to Ryukyu) carry two lineages of the same lion, and both converge on this archipelago.

Komainu unsettle any notion of Shinto’s purity. The most conspicuous guardian figure at 80,000 shrines is an imported symbol that traveled more than 5,000 kilometers along the Silk Road from Persia. Yet it also shows that Japanese faith is not a closed system but a meeting point of cultures across Eurasia. Part of the global connections traced in Chapter 5 is already inscribed in the komainu at any shrine gate.

In 1906 (Meiji 39), the Japanese government issued the Shrine Consolidation Order (Jinja Gōshi Rei). Under the principle of one shrine per town or village, smaller shrines were to be merged or abolished. The stated aim was to “enhance the dignity of shrines”; in practice the order systematized State Shinto and opened shrine forests to logging for revenue.

About 70,000 of the country’s estimated 200,000 shrines were abolished or forcibly merged under this policy. In Mie and Wakayama Prefectures alone, more than 90% of shrines disappeared. Sacred groves that communities had tended for centuries, in some cases for more than a thousand years, vanished at the stroke of an administrative order.

Kumagusu Minakata, a polymath naturalist, opposed the policy head-on. He submitted a formal petition to the government arguing that shrine groves were not appendages to religious facilities but the local ecosystem itself, and that their destruction would cause irreversible environmental damage. His argument anticipated modern ecology by a century.

Minakata’s campaign had some effect: the pace of consolidation slowed. But the 70,000 lost shrines and their forests never came back. The policy belonged to the Meiji government’s program of modernization-as-Westernization. State Shinto set out to reorganize diverse local practices into a more centralized system, and small community shrines and their sacred groves bore much of the impact.

The postwar Shinto Directive, which dismantled State Shinto, ironically opened a chance to recover the diversity that Meiji had destroyed. But forests once felled do not grow back over concrete, and shrines rebuilt on paved ground have no continuity with the ecosystems they once held. How much modernization took has yet to be reckoned with.

In the history of Japan’s shrines, no immigrant clan wielded greater influence than the Hata (Hata-uji). According to the Nihon Shoki, during the reign of Emperor Ōjin, Yuzuki no Kimi brought the people of 127 districts across to Japan.

The Hata clan is credited with an unusually large number of shrines. The best known are Matsunoo Taisha and Fushimi Inari Taisha, both in Kyoto. Matsunoo Taisha is said to have been founded in 701 by Hata no Imiki Tori. Fushimi Inari Taisha dates to 711, when Hata no Irogu enshrined a deity on Mount Inari. The Inari faith, a network of about 30,000 shrines across Japan, began with an immigrant clan from across the sea.

The Hata stronghold was Yamashiro Province (present-day southern Kyoto Prefecture), and the place name Uzumasa survives there today. The Miroku Bosatsu (Maitreya) in half-lotus contemplation at Kōryū-ji in Uzumasa—designated National Treasure No. 1—closely resembles Buddhist statuary of the Korean Peninsula, which is consistent with the Hata clan’s continental origins.

The origins of the Hata remain debated. The Shinsen Shōjiroku records them as descendants of Qin Shi Huang, the First Emperor of China, though that is likely a genealogical embellishment for prestige. Modern scholarship favors a connection to the Gaya (Kaya) region of the southern Korean Peninsula. Yet some researchers note that the Hata’s skills—sericulture, weaving, sake brewing, civil engineering—may trace further west along the Silk Road. Some also connect the Hata to Keikyō (Nestorian Christianity), an argument that intersects with the Japanese-Jewish common ancestry hypothesis (Nichiyu Dōsoron).

The Hata clan’s mark on Japan’s shrine culture is not in dispute. Immigrants from across the sea enshrined “Japanese gods,” and that faith spread across the archipelago. The boundary between indigenous Japanese faith and foreign culture was blurred from the beginning. Shrines are not purely Japanese creations; they are the product of a fusion between continental culture and the spirituality of the archipelago.

Amaterasu Ōmikami retreats into the Ama-no-Iwato (Heavenly Rock Cave), plunging the world into darkness. The gods hold a raucous celebration, and she emerges once more. This climactic episode of Japanese mythology has a distinct structure: a being of light experiences darkness, undergoes death (concealment), and is resurrected. It matches, with unsettling precision, another story from the other side of the world: the crucifixion and resurrection of Jesus Christ.

Coincidence is the obvious explanation, and yet the parallels do not end there. Before the Ama-no-Iwato, Ame-no-Uzume performs a wild, ecstatic dance; the gods burst into laughter; and drawn by that collective joy, Amaterasu opens the cave. In the resurrection of Christ, too, the stone of the tomb is rolled away and light breaks the darkness. Both narratives turn on one dynamic: the collective ecstasy of a community forces open a sealed door.

There is a deeper parallel still. The Daijōsai is a secret rite performed once only, after a new emperor’s enthronement. The emperor shares newly harvested rice with the gods, passes a night as a symbolic death, and rises the following morning as a reborn emperor. Comparative religion scholars, among them Tsutomu Satō, have repeatedly noted the structural resemblance to the Last Supper, at which Christ broke bread and shared wine with his disciples before his death and resurrection.

At Konoshima-ni-masu-Amaterumitama Shrine (commonly known as Kaiko-no-Yashiro, the Silkworm Shrine) in Uzumasa, Kyoto, stands the only mihashira torii, or three-pillared torii, in Japan. Three pillars form a triangle with a stone set at the center—an unusual and unexplained gate. Some have suggested it symbolizes the Christian Trinity (Father, Son, and Holy Spirit). The shrine was built by the Hata clan, a lineage possibly influenced by Keikyō (Nestorian Christianity), which may have traveled the Silk Road to reach Japan.

Then there is Inari. Fushimi Inari Taisha, the head shrine of all 30,000 Inari shrines, was also founded by the Hata clan. The theory that the name INARI derives from INRI (Iesus Nazarenus Rex Iudaeorum, “Jesus of Nazareth, King of the Jews”), the inscription placed on Christ’s cross, has been rejected by scholars. Why this phonetic coincidence should sit in a shrine built by the Hata clan is still unexplained. When coincidences accumulate beyond a certain threshold, they cease to be coincidences.

None of these parallels constitute proof. Given the prevalence of death-and-resurrection motifs in mythology worldwide (documented in Joseph Campbell’s The Hero with a Thousand Faces), they may well be archetypal patterns shared by all humanity. Yet the possibility that Japanese shrines and Middle Eastern religions are structurally connected through the historical presence of the Hata immigrant clan suggests that the faiths of this archipelago reached further than the isolation of the islands would imply.

Every July, enormous yamaboko floats process solemnly through the streets of Kyoto. It is easy to watch this millennium-old festival and accept it without question as Japanese tradition. But if an almost identically structured festival was already being performed on the banks of the Nile three thousand years ago, coincidence becomes a harder answer to keep. That festival is the Opet Festival of ancient Egypt, a ceremony of royal renewal in which the sacred barque of Amun-Ra was carried from the Temple of Karnak to the Temple of Luxor.

At the heart of the Opet Festival was a specific act: people carried a sacred boat through the streets from temple to temple. A golden boat-shaped portable shrine called a barque held the divine image; priests lifted it on carrying poles and processed through the city. The yamaboko floats of the Gion Festival are likewise enormous mobile sanctuaries bearing divine spirits, drawn through the streets by the people. A boat-like structure carrying a god, borne through the city by the crowd: this shared ritual structure, found along the Nile and along the Kamo River alike, is not easily dismissed as a universal human archetype.

One word is worth pausing on. Gion, and the sacred hill of Jerusalem, Zion: the phonetic resemblance has long been noted. The Gion Festival traces its origins to a goryō-e (spirit-pacification rite) of 869 CE, but the Hata clan was closely involved in founding Yasaka Shrine, which enshrines Gozu Tennō (the Bull-Headed Heavenly King). If the Hata can be traced through Silla, or further west to Central Asia and Persia, the possibility that Gion is an echo of Zion cannot be entirely ruled out.

A bolder hypothesis follows: that the Ark of the Covenant of the Old Testament derived from the Egyptian barque. Some scholars trace the etymology of Ark to the Egyptian word ankh (life). If the biblical account of Moses being raised in Egypt reflects historical reality, it would not be surprising for him to have inherited the Egyptian ritual form, a sacred chest borne in procession. From barque to Ark, and perhaps, at the far end of the Silk Road, to yamaboko: the sacred vessel may have traveled steadily eastward, changing form across three millennia.

Some heterodox researchers push the connection further still, asking whether King David of the Old Testament and Pharaoh Thutmose III of Egypt’s Eighteenth Dynasty were one and the same. Thutmose III, called “the Napoleon of ancient Egypt,” was a conqueror-king whose military record overlaps with the biblical account of David. If that holds, the ritual tradition of David-as-Thutmose III could have traveled through the conduit of the Hata clan as far as Kyoto. The claim is far from academically proven, and it cannot be conclusively refuted either.

Listen to the Gion-bayashi, the festival music played atop the yamaboko. If that distinctive melody is the echo of a celebration held on the banks of the Nile three thousand years ago, Kyoto’s summer takes on another aspect. History is not the straight line written in textbooks. It may be a spiral memory, crossing seas and deserts, changing over millennia as it travels. When a hoko float turns a street corner in Kyoto, the unspoken memory of humankind creaks quietly in its timbers.

The name Abe no Seimei (安倍晴明) usually calls up a sorcerer commanding shikigami spirit servants and slicing through darkness with a pentagram. Cinema and manga built that image of the mystical wizard. The historical reality is a long way from it. Onmyōji (陰陽師) were civil servants. The Onmyō-ryō (陰陽寮) was a bureau of the ritsuryō state charged with astronomy, calendrics, and topographical divination. Its officers compiled calendars, predicted eclipses, and recorded celestial anomalies; they were the scientists of ancient Japan. And their science was built deep into the design of shrines.

The layout of Heian-kyō (平安京) shows that onmyōdō lay at the foundation of national infrastructure. Shijin sōō (四神相応) set the Azure Dragon to the east (the Kamo River), the White Tiger to the west (the San’indō road), the Vermilion Bird to the south (Ogura Pond), and the Black Tortoise to the north (Funaoka Hill). The city was engineered on the principles of feng shui, and shrines were placed at its critical junctures. Kamigamo and Shimogamo Shrines secured key points along the dragon vein of the Kamo River. Kitano Tenmangū was placed at the reverse kimon (demon gate) in the capital’s northwest. Shrine locations were determined not by devotion but by the spatial calculus of the state.

Seimei’s emblem, the five-pointed star known as the Seimei Kikyō, draws the mutual generation and destruction cycles of the Five Phases (wood, fire, earth, metal, water) in a single unbroken stroke. But the core of Seimei’s art lay in a system far older than the pentagram. The Twelve Celestial Generals—prototypes of the shikigami—derive from Rikujin Shinka (六壬神課), a Chinese divination system with a two-thousand-year lineage that combined the twelve earthly branches, the Five Phases, and the cardinal directions into a sophisticated computational framework. This was not sorcery. It was ancient statistics correlating celestial motion with terrestrial events.

The Meiji government effectively banned onmyōdō in 1870. A system that had served as the intellectual infrastructure of governance for a millennium was reclassified overnight as superstition. The official justification was the abolition of outmoded customs incompatible with modernization. The structural reason went deeper: onmyōdō was a framework that determined when to act. The emperor’s movements, the launch date of military campaigns, the orientation of a new capital—all depended on the onmyōji’s judgment. For a Western-style modern state, a third authority, neither science nor parliament, intervening in national decisions was intolerable. The prohibition of onmyōdō was not the elimination of superstition; it was the centralization of decision-making authority.

The shrine where crowds gather at New Year may stand exactly where it does because a thousand years ago an onmyōji read the stars, surveyed the earth’s veins, and determined that this spot, and only this spot, was the correct one.

The world’s oldest orchestra sits not in Vienna or Berlin but inside the Imperial Palace in Tokyo. The gagaku ensemble of the Imperial Household Agency’s Board of Ceremonies has performed without interruption for more than 1,300 years. Western classical music claims at most four centuries; gagaku has been transmitted continuously from the Asuka period to the Reiwa era. Hereditary musical houses made that possible, among them the Tōgi (東儀) family, whose lineage reaches back more than 1,300 years to ancestors among the Hata clan, the Silk Road immigrants of the earlier sections.

The structure of gagaku carries in sound the way the culture of these islands came into being. Chinese tōgaku (唐楽), Korean komagaku (高麗楽), and indigenous kuniburi-no-utamai (国風歌舞): three musical traditions fused into a single art. This is the musical analogue of the tripartite-structure model set out in Chapter 1. The Jōmon voice, the Yayoi flute, and the Kofun-era continental instruments coexist within the vessel of gagaku. And gagaku has no conductor. Performers read one another’s breath, aligning their sound through a shared sense of ma, the space between notes. Ishin-denshin, heart-to-heart communication without words, has been practiced as a musical technique for thirteen centuries.

The four principal instruments correspond to the structure of the cosmos. The shō (笙), seventeen bamboo pipes bundled together, represents heaven; its sustained chord, unbroken whether the player inhales or exhales, symbolizes eternity. The ryūteki (龍笛), the dragon flute, represents the sky between heaven and earth. The hichiriki (篳篥), a small double-reed pipe that produces the ensemble’s greatest volume, represents the voice of earthly humanity. And the wagon (和琴), Japan’s indigenous six-stringed zither said to have been played by Ame-no-Uzume before the Heavenly Rock Cave, forms the core of the kuniburi repertoire. Heaven, sky, earth, humanity—four instruments sounding the four layers of the cosmos: a mandala made of sound.

The lyrics sung in the most formal court ceremonies sometimes carry secular, even comical, content. The saibara (催馬楽) song cycle includes verses about cracked heels and romantic dalliance. The sacred and the profane are not separated; cosmic solemnity and human triviality share the same stage. This is a musical expression of the Shinto worldview: the sacred and the everyday are contiguous.

Just as Ise Grand Shrine achieves eternal motion through rebuilding, gagaku achieves eternity by passing breath from one generation to the next. Gagaku heard at a shrine festival is the vibration of air passed, lung to lung, across thirteen hundred years.

North of Lake Biwa, in the shadow of Chikubu-shima (竹生島), lies a site of a kind that could never have survived on dry land. It sits sixty-four meters down, off the southern flank of Tsuzuraozaki (葛籠尾崎). In November 2025, a Shiga Prefecture underwater survey—commissioned by the Agency for Cultural Affairs—recovered a nearly intact pointed-base vessel about 25 centimeters tall. It is described, tentatively, as possibly Oshigata-mon (押型文土器) ware, a typology that would place it at 11,000–10,500 years before present, the Incipient-to-Early Jōmon transition. If the estimate holds, it is the oldest vessel yet recovered from Tsuzuraozaki.

The recovery was carried out by an autonomous underwater vehicle (AUV) with four cameras, sweeping about 200 × 40 meters of the lake floor in 3D photogrammetry. At a depth no human body can reach unaided, in cold silt sealed from air and light, a ten-thousand-year-old vessel had lain undisturbed. Beside it lay six Haji-ware (土師器) jars of the mid-5th century Kofun period. Three of them were aligned in a single row, a configuration that strongly suggests cargo lost overboard. The site, then, is not the trace of a single moment but a column of sediment: ten thousand years of things that fell into the water, stacked in layers.

Tsuzuraozaki has long been the subject of an unresolved debate: why are so many pots concentrated on the lake floor there? (a) They were deliberately submerged as offerings to water deities, the ritual-offering hypothesis. (b) Lakeside settlements were inundated by rising water and remained on the submerged shore, the drowned-settlement hypothesis. (c) Boat cargo and fishing gear were lost to the lake across eras, the lost-goods hypothesis. The 2025 announcement settles none of them. The three aligned Haji-ware jars support (c); a complete pointed-base vessel from ten millennia earlier is more easily explained by (a) or (b). The Shiga official’s public remark addressed only the reason for preservation—“it survived because air could not reach it”—not the reason for the vessel’s presence in the first place.

The find matters for HIMOROGI because it opens a question: long before permanent shrines, and long before texts mention himoroki, might water boundaries already have served ritual purposes (see Chapter 2, “Himorogi—Ancient Word, Modern Form”)? Early Jōmon sites at lakeshores, wetlands, and springs have yielded objects that have been discussed as ritual goods. If the Tsuzuraozaki vessel was an offering, it would represent a prayer not of building but of letting go. No evidence, however, directly connects this find to himorogi; the comparison here is explicitly HIMOROGI’s narrative reading.

That Jōmon pottery is among the oldest in the world is already established (see Chapter 1, “Jōmon Pottery—The World’s Oldest Vessels”). Finding one of those vessels at a depth no human can reach says something more: the Jōmon did not merely invent the pot; they also kept a place to lose it, a place to return it to. What the maker of this pointed-base vessel imagined lay on the far side of the water is beyond recovery. But on the floor of Lake Biwa, that unanswerable question still rests, intact.