Niikappu mud volcano

Niikappu mud volcano is a geological formation featuring multiple pools where pressurized gases from below push mineral-rich mud up through cracks in the ground. This continuous activity creates a dynamic landscape that changes throughout the year.

The site gained official status as a Prefectural Natural Monument in 1968, placing it within Japan's system for protecting geological formations. This designation reflected recognition of its importance to regional natural history.

The mud volcano serves as an educational resource for local schools, helping students understand the geological processes and natural phenomena of their region.

You can watch the activity from designated viewing areas that are open throughout the year. Information boards throughout the site explain the processes happening beneath the ground.

The temperature variations and microbial compositions within the mud create specific conditions that support specialized organisms adapted to this environment.

Location: Niikappu

GPS coordinates: 42.37450,142.31014

Latest update: December 10, 2025 16:23