The mound of Ainuta is a mysterious segment of piled earth. Its origins are unknown but it is widely held to be the remnant of a fort, Ainuta-rui. A contending theory is that it was a flood embankment (the Shio River is nearby), but I find this strange as the surviving segment leads away from the river, rather than parallel. It we are viewing a cross-section of the embankment instead, then it was fairly wide and flat for a flood defence.
Ainuta-rui is a fortified residence site in Fujii Township, Nirasaki Municipality. The ruins of Ainuta-rui consists of a segment of dorui (earthen ramparts) which are thought to have once ensconced a medieval residence, though who built it is unknown. The site is now fields and the embankment, which is quite wide and sloping, hosts an orchard and a bamboo patch.
|English Name||Ainuta Fort|
|Castle Type||Fortified Manor|
|Castle Condition||Ruins only|
|Historical Period||Pre Edo Period|
|Access||Nirasaki Station on the Chūō Main Line; 18 minute walk|
|Visitor Information||24/7 free; fields|
|Time Required||10 minutes|
|Location||Nirasaki, Yamanashi Prefecture|
|Coordinates||35° 43' 17.15" N, 138° 27' 5.94" E|
|Added to Jcastle||2022|
|Admin Year Visited||Viewer Contributed|
|Friends of JCastle|
|Oshiro Tabi Nikki|