This popular 3.7km nature trail weaves around a dozen or so pools known as the Five Colours Lakes. Mineral deposits from the 1888 eruption imparted various hues to the waters – cobalt-blue, emerald-green, reddish-brown – which change with the weather. Trailheads begin at Goshiki-numa Iriguchi and Bandai-kōgen bus stops, the main transport hubs beside Hibara-ko, the largest of the Ura-Bandai lakes.
Buses depart from Inawashiro. In April the trail may still be covered in packed snow, and November marks the start of the long Tōhoku winter.