Ichinodaira Castle (Ina)

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InaIchinodairajou (1).JPG


It is thought that Ichinodairajō and Kamihiraidekojō worked as twin sites as branch fortifications of Ōjō high above. It is most likely that Kamihiraidekojō was built first with Ichinodairajō built as an extension.

See Ina Kamihiraideko Castle and Ina Ou Castle for more information. The main castle in this area was Ina Ryuugasaki Castle.

Visit Notes

Ichinodairajō is located directly opposite the site of Kamihiraidekojō. Ichinodairajō is higher situated and appears to be larger in scale. There is a wide,flat area, all covered in snow when I visited, and embankments where a forest road grants access. This entry point with an embankment is tantalising but I could not be sure of it being related to any ruins of the fort, and in fact it appears unlikely. The 'taira', or plateau, is situated beneath steep elevation. No fort should be built in such a vulnerable position, but it appears that the ridge above here was also shaped into a bailey. The natural ridge continues to climb undisturbed above these two former baileys.

  • Fort site from below

Castle Profile
English Name Ichinodaira Castle (Ina)
Japanese Name 伊那一ノ平城
Founder Suwa Clan
Year Founded Medieval Era
Castle Type Mountaintop
Castle Condition Ruins only
Historical Period Pre Edo Period
Visitor Information
Access Tatsuno Station on the Chūō East Line; 25 minute walk
Visitor Information 24/7 free; park
Time Required 20 minutes
Location Tatsuno, Nagano Prefecture
Coordinates 35° 59' 43.08" N, 138° 0' 28.22" E
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Added to Jcastle 2022
Contributor ART
Admin Year Visited Viewer Contributed
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