Mount Iiji

Mount Iiji is an extinct stratovolcano in Niigata Prefecture, rising between Yuzawa and Minamiuonuma with a distinctive conical form. Its landscape developed through accumulated layers of volcanic ash and lava deposits that built up over time.

The mountain formed millions of years ago through repeated volcanic activity and significantly shaped the region's landscape. This geological history underlies the topography you see in Niigata Prefecture today.

The mountain figures in local festivals and traditions that show how the community connects with the landscape. These celebrations bring neighbors together and shape how people experience their region today.

Several hiking trails connect the mountain with Yuzawa and Minamiuonuma, offering routes for different experience levels. Hikers should prepare for changing altitude conditions and temperature differences along the way.

Vegetation on the slopes shifts noticeably from base to summit, displaying different ecosystems tied to altitude. This natural progression lets visitors experience multiple landscape zones in a single location.

Location: Yuzawa

Location: Minamiuonuma

GPS coordinates: 36.95611,138.83306

Latest update: December 12, 2025 09:03