
Mukiyama Tunnel
Mukaiyama Tunnel
A mysterious 110m unlined tunnel featuring a unique double-layered structure.Explore this spot

Mukiyama Tunnel is an unlined tunnel approximately 110m long, located in Otaki, Chiba Prefecture. The most remarkable feature of this site is its unique structure.
What makes it special
About Mukiyama Tunnel
Observe the unique double-layered structure up close. It is highly recommended to capture the historical, unlined textures through photography. Use this as a relaxing stop during your drive to connect with nature.
Weather forecast
Mon
8/3
26°/22°
39%
Tue
8/4
26°/22°
16%
Wed
8/5
27°/22°
49%
Thu
8/6
28°/24°
77%
Fri
8/7
28°/24°
71%
Sat
8/8
29°/23°
55%
Sun
8/9
29°/22°
55%
Tips
Payment
No admission fee required.
English Support
No English signage or staff available on-site.
Reservations
No reservation required.
Clothing
Comfortable walking shoes are recommended.
Photography
Allowed, but do not obstruct traffic.
Accessibility
Surfaces may be uneven; check road conditions in advance.
Manners
Please take your trash home and respect the historical structure.