Onneto Hot Spring Waterfall
It's about a 1.5km walk along a forest road from the parking lot on the south side of Onneto. "Onneto Yu no Taki" consists of two waterfalls approximately 30 meters high, and was used as a secret hot spring in the past. Currently, it is not possible to take a bath as it may affect the production of manganese oxides. The rock surface is covered in black because microscopic algae and bacteria in the hot springs oxidize manganese minerals in the water, creating manganese deposits. This is a rare place in the world where manganese deposits formed on the ocean floor can be observed on land. It has been designated as a national natural monument.
- * Please note that the text shown on this page includes machine translations.
- Nearest airports
General Information
- Postal code
- 〒089-3963
- Address
- 北海道足寄町上螺湾
- Telephone Number
- 0156-25-6131（Ashoro Tourism Association）
- Car Park
- 50 spaces, free
- Directions
- ●By car: About 20 minutes from Akanko Bus Terminal
●By car: About 60 minutes from Doto Expwy Ashoro IC - Website
* Information on facilities is subject to change. Please check each official website for the latest information.
