Kuzutto, Otaki Town, Isumi District, Chiba Prefecture
Rating
Cost per person
¥500
The Kobundo Cave Ruins in Yoro Keikoku Valley are the remains of a tunnel originally constructed about 140 years ago to divert the Yoro River for farmland development. While the tunnel's upper section collapsed in 1979, the towering cliffs that remain create a unique and scenic spot. Located along the Nakase Promenade, it's a popular destination for hikers and nature enthusiasts. The valley is known for its seasonal beauty, especially the autumn foliage. Access is via local train and a walk along the river, offering a peaceful escape from the city. Be sure to check out the nearby Ni-Storied Tunnel on the way!