明戸古墳, Ancient burial mound in Chiba Prefecture, Japan
The burial mound contains dual stone chambers positioned on its southern side, with a distance of 10 meters separating each structure.
The tumulus dates from the late seventh century during the Final Tumulus period and stands on a plateau 30 meters above Inba-numa Marsh.
The stone chambers were constructed using tuffaceous sandstone containing numerous fossilized shells, reflecting the geological characteristics of the region.
The western stone chamber measures 4.23 meters in depth, 1.68 meters in width at the inner back wall, and reaches 2.14 meters in height.
The site became a national historic site on January 27, 1941, and remains under the management of the nearby Ryukaku-ji Temple.
Architectural style: keyhole-shaped kofun
GPS coordinates: 35.74853,139.89833
Latest update: March 9, 2025 23:00
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