Maruyama Castle (Ina)


KoideMaruyamajou (5).JPG


Maruyamajō is technically a hirayamajiro. There used to be an outer moat to the west protecting the flatland portion of the site toward where the kasuga-kaidō, an important trade route, ran (it is now 'Nagano Prefectural Road no. 88, Ina-Minowa Line'). Maruyamajō was used as part of the network of fortifications belonging to the Koide Clan. For more information see Ina Koide Castle.

Visit Notes

Koide-Maruyamajō is an earthworks fort site with deep, wide karabori (dry moats), multiple baileys and the remains of other earthworks such as tatebori (climbing trenches) and dorui (earthen ramparts). Luckily it had been pruned recently of bamboo growth when I visited, so the trenches were mostly clear. The site is now a cemetery and cedar plantation. This is a solid remnant of the Koide Castle fort network.

  • Approaching main site rear trench visible to left and topmost bailey to right

Castle Profile
English Name Maruyama Castle (Ina)
Japanese Name 小出丸山城
Alternate Names 小井弓丸山城
Founder Koide Clan
Year Founded Medieval Era
Castle Type Hilltop
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Kuruwa, Karabori, Dorui
Features trenches
Visitor Information
Access Shimojima Station on the Iida Line; 5 minute walk
Visitor Information 24/7 free; hill
Time Required 30 minutes
Location Ina, Nagano Prefecture
Coordinates 35° 48' 44.86" N, 137° 56' 15.43" E
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Added to Jcastle 2022
Contributor ART
Admin Year Visited Viewer Contributed
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