Amakusa

Amakusa (天草), which means "Heaven's Grass," is a series of islands belonging to Japan, off the west coast of Kyushu, the southernmost of the four main islands of Japan. The largest island of the Amakusa group is Shimoshima, which is 26.5 miles long and 13.5 miles in extreme width (42.6 km × 21.7 km). It is situated at 32°20'N, 130°E, separated from the rest of Kumamoto Prefecture by the Yatsushiro Sea.