Lake Akan
Lake Akan is a caldera lake, most famous for being home to Marimo, a rare spherical green alga. Along the southern shore are natural hot springs and pools of boiling volcanic mud called bokke. A sightseeing cruise on the lake is available from the end of April to November. During the winter, visitors can try fishing for pond smelt through the ice, or go skiing while enjoying a view of the frozen lake and the hot spring town.