Yokoyama Castle (Ina)

There used to be a fortification ruin here but it was completely flattened by the development of a housing estate called Oh’ishidaira, and now nothing remains.

History

Although it is not known when Yokoyamajō was built or by whom, it seems quite likely that it was part of the network of fortifications protecting the uppermost part of the Ina Valley, which was Suwa Clan territory. In that case it was a satellite fortification of Ryūgasakijō. See: Ina Ryuugasaki Castle.

Field Notes

There used to be a fortification ruin here but it was completely flattened by the development of a housing estate called Oh’ishidaira, and now nothing remains.

Gallery

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Castle Profile
English Name	Ina Yokoyama Castle
Japanese Name	伊那横山城
Founder	Suwa Clan
Year Founded	Medieval Era
Castle Type	Mountaintop
Castle Condition	Ruins only
Historical Period	Pre Edo Period
Features
Visitor Information
Access	Tatsuno Station on the Chūō Main Line and Iida Line; 25 minute walk
Hours	Access Limited
Time Required	10 minutes
Location	Tatsuno, Nagano Prefecture
Coordinates	35.98052, 138.00866
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Admin
Added to Jcastle	2022
Contributor	ART
Admin Year Visited	Viewer Contributed
Friends of JCastle
Oshiro Tabi Nikki

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