"Tokyo's only Jomon stone circle, where ancestors once watched the winter sun set over distant peaks"
Tabata Stone Circle
Machida, Tokyo, Japan
Five minutes from a Tokyo train station, a ring of stones marks where Jomon peoples gathered three thousand years ago. They built their ceremonial circle directly over the graves of thirty ancestors, aligning it so the winter solstice sun would set precisely over Mount Hirugatake in the Tanzawa range. It remains the only Jomon period stone circle in the Tokyo metropolitan area—a quiet reminder that the sacred can persist beneath modern landscapes.
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Quick Facts
Location
Machida, Tokyo, Japan
Tradition
Site Type
Coordinates
35.6011, 139.3639
Last Updated
Jan 21, 2026
Tabata emerged during the Middle Jomon period (around 3000 BCE) and remained in use through the Final Jomon period (ending around 800 BCE). It represents the southernmost known Jomon stone circle in the Kanto region and the only such site in greater Tokyo.
Origin Story
The Jomon period left no written records, so Tabata has no founding narrative in the conventional sense. The archaeological record reveals a site that evolved through distinct phases: initial settlement, establishment of cemetery, and finally construction of the stone circle over ancestral graves. This evolution suggests the location's significance grew through generations of experience until it warranted permanent monumental expression.
The choice of this particular ridge—among the many in the Sakai River valley—remains unexplained. Perhaps early residents noticed the solstice alignment. Perhaps the view toward the Tanzawa range carried meaning now lost. The deliberateness of the arrangement is clear; its origin story must remain speculative.
Spiritual Lineage
No continuous tradition connects Tabata to contemporary practice. The site predates by millennia any historical record. Yet the patterns visible here—honoring ancestors, marking seasonal transitions, creating sacred space through stone arrangement—anticipate themes that would later appear in Japanese religious traditions. The Jomon were not proto-Shinto, but they were engaged in concerns that Shinto would also address.
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