Oniba Castle

There is a nature trail leading all the way from Ueharajō to Onibajō, making for a pleasant stroll between the two sites. Onibajō is a small site consisting of trenches, embankments and bailey ruins. One can enter from either the main road up a long stairway, or from the top of a residential area ca

History

The origins of Onibajō are not clear, which is a shame because it has a cool name ("Demon Place"), but it was controlled by a branch of the Suwa Clan called the Amagasaki in the Sengoku Period. In the middle 16th century Onibajō was subjugated by Takeda Shingen.

Field Notes

There is a nature trail leading all the way from Ueharajō to Onibajō, making for a pleasant stroll between the two sites. Onibajō is a small site consisting of trenches, embankments and bailey ruins. One can enter from either the main road up a long stairway, or from the top of a residential area called Jōyama. Dorui (embankments) surround the shukuruwa (main bailey), and reach across the mountain ridge where one might otherwise expect to see more trenches. A large trench splits the castle roughly in two. The ninokuruwa (second bailey) is now the site of a pylon. Obi-kuruwa (ring baileys) wrap around the first and second enclosures. A third bailey sits between ramparts of piled earth, and has terraced sub-baileys below on either side.

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Castle Profile
English Name	Oniba Castle
Japanese Name	鬼場城
Founder	Suwa-Amagasaki Clan
Year Founded	Sengoku Period
Castle Type	Mountaintop
Castle Condition	Ruins only
Historical Period	Pre Edo Period
Artifacts	Karabori, Dorui, Baileys
Features	trenches
Visitor Information
Access	Chino Station on the Chuo East Line; walk 35 minutes
Hours	24/7 free
Time Required	45 minutes
Location	Chino, Nagano Prefecture
Coordinates	36.00481, 138.17323
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Admin
Added to Jcastle	2020
Contributor	ART
Admin Year Visited	Viewer Contributed

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