01 / Kanrei Domon
Under a cliff on National Route 1,stands a tunnel 100.9 m long.

Kanrei Domon, in Tonosawa in Hakone-Yumoto, is a reinforced-concrete structure that protects the road from falling rock. It is 100.9 m long and 6.3 m wide and was completed in 1931 (Showa 6). Together with Chitose Bridge and Asahi Bridge it forms the National Route 1 Hakone-Yumoto Road Facilities, designated an Important Cultural Property in 2015.
- 100.9 m long, 6.3 m wide
- Completed in 1931
- Important Cultural Property, 2015


