Yotei volcano (羊蹄山 Yōteizan) is a symmetrical andesitic-to-dacitic stratovolcano NW of Usu volcano on southern Hokkaido, Japan. The summit contains a 700 m wide crater and its flanks are cut by deep erosion gullies. The last eruption of the summit crater was about 5-6000 years ago. Hangetsu-ko (Half Moon Lake) is a tuff cone on the lower NW flank of Yotei. It erupted ca 3000 years ago.
