Gyōda Futagoyama Kofun, Keyhole-shaped burial mound in Gyoda, Japan.
The Gyōda Futagoyama Kofun extends 132 meters in length with a circular rear section and rectangular front area, surrounded by a double moat system.
This sixth-century burial structure earned Special National Historic Site status in 2020 as the largest tumulus in Musashi Province within the Sakitama Kofun Cluster.
The tomb's construction techniques and recovered artifacts, including meter-tall cylindrical haniwa and pottery, reflect the advanced engineering methods of ancient Japanese societies.
Repairs conducted between 2013 and 2018 addressed water erosion issues in the inner moat to prevent structural collapse of the burial mound sections.
Ground penetrating radar investigations in 2017 revealed a horizontal stone chamber in the eastern section of the circular portion without physical excavation.
Location: Gyoda
Inception: 6 century
Architectural style: keyhole-shaped kofun
Part of: Sakitama Kofun Cluster
GPS coordinates: 36.12626,139.47906
Latest update: March 15, 2025 15:15
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