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Ryugashi Cavern

竜ヶ岩洞, Ryugashidou

One of the largest and most famous caves in Japan. The first 400 m of the 1000-m limestone cavern are open to the public. Stalactites and stalagmites abound, and the centerpiece is a 30-m underground waterfall. This cave stays about 15°C year-round, making it a great place to cool off during the sweltering summer heat.

Address
Inasa-cho Tabata 193 - Kita-ku
Getting there
from the central bus station, take the bus for Okuyama and get off at Ryugashi-do Iriguchi: 竜ヶ岩洞入口
Hours
Closed · opens 9 am
Weekly hours
Mon9 am–5 pm
Tue9 am–5 pm
Wed9 am–5 pm
Thu9 am–5 pm
Fri9 am–5 pm
Sat9 am–5 pm
Sun9 am–5 pm
Price
Adults ¥650, children 13-15 ¥450, children ¥350

Listing from Wikivoyage: Hamamatsu, CC BY-SA 4.0.

Updated 28 Sept 2026. Something wrong? Tell us.