The names of Japan's 8 regions are: Hokkaido, Tohoku, Kanto, Chubu, Kinki, Chugoku, Shinkoku, and Kyushu. Mount Fuji is the highest and most prominent mountain in japan at 3776 meters.Mild earthquakes are fairly common, and more destructive earthquakes hit every few years. Shinano river is the longest and largest river in japan. flowing from nagano to niigata. lake biwa is the largest freshwater lake in japan in shiga, it's also an ancient capital.