Overview
The Natagiri Cave Site is a Jomon-period cave archaeological site in Hamada, Tateyama City, Chiba Prefecture. It occupies a sea cave carved out by the erosion of the waves, preserving traces of ancient people who lived in or offered prayers within this hollow. Protected as a Chiba Prefecture designated historic site (under the name Natagiri Cave), it is a rare place near the tip of the Boso Peninsula where, on the Tateyama shore, one can let the imagination reach back to Jomon times.
Highlights
- ●A Jomon site using a sea cave born of wave erosion
- ●Its value as a Chiba Prefecture designated historic site (Natagiri Cave)
- ●A seaside setting in Tateyama near the tip of the Boso Peninsula
- ●A space to imagine ancient life and prayer
History
The Natagiri Cave is a sea cave formed by the cutting action of the waves and is known as a Jomon-period site. It speaks of how this natural cavern served as a stage for people's daily life and ritual, and for this historical value it has been designated a historic site by Chiba Prefecture (under the name Natagiri Cave). For details on excavated artifacts and the specific findings of surveys, please consult the official information of Tateyama City or on-site explanations.
Access
The site lies in Hamada, Tateyama City, Chiba Prefecture, at roughly 34.97 degrees north and 139.80 degrees east, along the coast of the southern Boso Peninsula. It is close to central Tateyama and Tateyama Bay, reachable by public transport, rental car, or local bus. Please confirm exact directions, whether viewing is permitted, and opening conditions via official Tateyama City information before visiting.
Best season
As befits a seaside site, a visit is recommended in the mild, comfortable months from spring to early summer and in autumn. In summer it pairs well with the seaside leisure of Boso, and in winter, on a day of clear air, it makes a striking pairing with the coastal scenery. Take care with weather and wave conditions when you go.
Map
34.9725, 139.8021 · Wikidata
Suggested itinerary
- 1Set out from central Tateyama or Tateyama Bay toward the Hamada coast
- 2View the Jomon sea cave at the Natagiri Cave Site
- 3Stroll the nearby coastline and Tateyama's historic sites, shrines, and temples
- 4End the trip enjoying Boso's seafood and scenery
Did you know?
💡 The place name Natagiri evokes a cave that looks as if it were split open with a hatchet (nata). As an example of a sea cave that became a stage for Jomon life, it draws academic attention, and the Tateyama area is dotted with historic sites, shrines, and temples that tell of the long relationship between the sea and its people.
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