Ubaguchi-toride was a small fort built by Tokugawa forces in 1582 to facilitate their entry into Kai from Suruga. This is recorded in the diary of Matsudaira Ietada, an aid to Tokugawa Ieyasu. Given the importance of the Ubaguchi Pass, it is possible albeit unknown that the Takeda also maintained a fort here.
Ubaguchi-toride is a yamajiro (mountaintop castle) site at the edge of the Kai Basin. The old prefectural road from before the construction of Ubaguchi Tunnel weaves around the base of the fort-mount, but it is not accessible between December and April. I had to walk a little up the track from the point at which a barrier gate stands. I scrambled up the hillside from the rear of the fort so as to be sure not to miss any trench ruins. Ubaguchi-toride is a single bailey fort complex with some terracing and tatebori (climbing trenches). Beneath the fort is the village of Ubaguchi-juku, a shukuba (post town) which served as the main stop before leaving Kai for Suruga for centuries until the construction of the modern tunnel.
|Pre Edo Period
|Nearest Station is Kai-Ueno on the Minobu Line; take the old road to Lake Shōji (closed in winter)
|24/7 free; mountain
|Kōfu, Yamanashi Prefecture
|35° 33' 59.15" N, 138° 35' 42.65" E
|Added to Jcastle
|Admin Year Visited
|Friends of JCastle
|Kojō no Fūkei