Interesting fact
Oyunuma Pond is a geothermal lake located in Noboribetsu, Hokkaido, Japan. This volcanic pond has a diameter of approximately 200 meters and a depth of about 30 meters. The water temperature ranges from 40 to 50 degrees Celsius due to its geothermal activity.
More about Oyunuma Pond
Oyunuma Pond is a sulfur-rich hot spring, formed by volcanic activity, contributing to its distinct grey color and sulfuric odor. It is part of the Noboribetsu Onsen area, a popular hot spring region known for its geothermal features. Visitors can access the pond via walking trails from nearby attractions. The surrounding area is equipped with viewing platforms offering various perspectives on the geothermal phenomena.