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.
Yamanakako is a popular summer resort, especially for water sports, with lots of camping spots around the lake. The surface of Shojiko is where you can photograph the classic reflected image of Fuji upside-down, while at Motosuko you can recapture the scene of Mount Fuji that’s printed on the 1000 yen bill. During late April through May, get your camera ready for the spectacularly photogenic shibakazura flower festival, where thousands of tiny pink and purple moss phlox form a giant flower carpet with Fuji as a backdrop.