Joumineyama Castle

History

Jōmineyamajō, also called Jōǵaminejō, is known as a fortification site from its name and scant remains, but the history is unknown. Due to its location, it is speculated that it was built by the Nishina Clan to protect their territory from invasion from the east. It may have been a satellite fortification of Raidenjō to the northeast, but this is not verified.

Visit Notes

Jōmineyamajō is a yamajiro (mountaintop castle) ruin in Yasaka Township, Ômachi Municipality. Features include a segment of ridge perhaps used as a bulwark, and flattened areas used as baileys. The earthworks are not well developed and may represent a relatively old fortification. The exact extent of the fort, including what was likely the main bailey, is hard to determine because this castle ruin has been largely destroyed by landslides. The cliff created by the landslide is so enormously large, and the remaining earth at the edge of the cliff extends jutting over blank space, so that it is incredibly dangerous to approach. As I approached the edge of the cliff, the earth seemed loose under my feet, almost cushion-like, and I sensed there must be only a meter or so of earth between me and a deathly drop. In general this site is overgrown and dangerous to explore with little to justify the risk and effort.

Gallery

Castle Profile
English Name	Joumineyama Castle
Japanese Name	城峰山城
Alternate Names	Jōǵaminejō (城ヶ峰城)
Founder	Nishina Clan (theorised)
Year Founded	Unknown
Castle Type	Mountaintop
Castle Condition	Ruins only
Historical Period	Pre Edo Period
Artifacts	Dorui, Kuruwa
Features
Visitor Information
Access	Shinano-Ômachi Station on the Ôito Line; rental e-bike
Visitor Information	24/7 free; mountain
Time Required	30 minutes
Website	https://www.city.omachi.nagano.jp/00025000/00025900/3omachi-yamajoro.html
Location	Ômachi, Nagano Prefecture
Coordinates	36° 29' 12.41" N, 137° 55' 3.11" E
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Admin
Added to Jcastle	2023
Contributor	ART
Admin Year Visited	Viewer Contributed
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