Lake Akan was created by volcanic activities of Mount Oakan-dake. It is home to and well known for marimo, an unusual moss ball (aegagropila sauteri) designated as a special natural treasure. There are walking trails around the lake, which is surrounded by rich primeval forests. The lake starts to freeze at the end of December and is entirely frozen over before long. Though it is 20 degrees below zero everyday in winter, many people enjoy winter leisure on the ice. You can rent fishing rods, bait and tents for fishing of lake smelt. Fish you catch can be fried for you in tenpura batter on site and freshly-fried fish is delicious. You can also enjoy snowmobiles, four-wheel buggies, cross-country skiing and skating from January to the end of March.
Marimo Tenji Kansatsu Center, a facility displaying and introducing marimo, is on Churui Island in Lake Akan. You can go there by sightseeing boat.
Take a bus from JR Kushiro Sta. and get off at Akanko Onsen bus stop.
Akanko onsen, Akan cho, Kushiro city, Hokkaido