Yamanashi Prefecture (山梨県 Yamanashi-ken) is a prefecture of Japan located in the Chūbu region of the main island of Honshu.

The prefecture is landlocked, featuring a fertile central valley, the Kōfu Basin, surrounded by many of the highest mountains in Japan including the highest, Mount Fuji located on the southern border with Shizuoka. The capital of the prefecture is the city of Kōfu.

Links:

Yamanashi Prefecture
Wikipedia