Saiko Nature Center (Saiko Bat Cave and Kunimasu Museum)

This hands-on facility allows visitors to learn about Lake Saiko and the surrounding nature.
Visitors can enjoy a tour of the lava cave, which has a total length of more than 350 meters, and an exhibition on the ecology of kunimasu, also known as the lack kokanee (Oncorhynchus kawamurae), an extremely rare fish that used to live only in Lake Tazawa in Akita Prefecture.