Mount Rishiri is a striking stratovolcano off the coast of Hokkaido, Japan, known for its cone shape resembling Mount Fuji. Rising out of the Sea of Japan on Rishiri Island, it offers challenging hikes with stunning views of Hokkaido, Rebun Island, and even Sakhalin Island on clear days. The mountain's opening festival kicks off the climbing season each year, attracting adventurous hikers looking to conquer this iconic peak.