The Strait of La Perouse separates this island fromSakhalin Island in the north, and the Seikan Tunnel traverses the Sugaru Strait, which separates this island on whichthe Ainu live from Honshu in the south.
This island's Lake Akan is famous for its moss balls. The country that controls this island claims thatsome nearby islands such as Iturup and Kunashir fall under this island's Nemuro subprefecture. This islandis the largest of its country's 47 prefectures. This island was the site of the (*) 1972 Winter Olympics, whichwas held in a city that is much larger than its second and third largest cities; those other cities here are Asahikawa,which is in its centre and Hakodate, which is in its south. The Strait of La Perouse separates this island fromSakhalin Island in the north, and the Seikan Tunnel traverses the Sugaru Strait, which separates this island on whichthe Ainu live from Honshu in the south. For 10 points, name this northernmost of the four main islands of Japan.
This island's Lake Akan is famous for its moss balls. The country that controls this island claims thatsome nearby islands such as Iturup and Kunashir fall under this island's Nemuro subprefecture.
Hokkaido [or Ezo]