History
These islands belonged to the Ainu until the recent migration of the Japanese to Hokkaido.
Climate
Heavy snow in winter. Summer is the best time to visit.
Understand
Rishiri-to is a small island off the north-west coast of Hokkaido made up of a single volcano called Rishiri-san å©å°»å±± which towers some 1719m over the surrounding sea. It can be seen from over 100km away.
Rebun-to is the smaller of the two with its highest peak, Rebun-dake 礼æå²³ a mere 490m and thus much easier to climb. The island has many wildflowers and some waterfalls, and the view of Rishiri-to from it is nothing short of spectacular.