Kupreanof Island - Wikipedia
https://en.wikipedia.org/wiki/Kupreanof_Island
Kupreanof Island is an island in the Alexander Archipelago in southeastern Alaska. The island is 84 km (52 mi) long and 32 km (20 mi) wide with a total land area is 2,802.84 km2 (1,082.18 sq mi), making it the 13th largest island in the United States and the 170th largest island in the world.
Highest elevation: 3,900 ft (1,190 m)
Area: 1,082.18 sq mi (2,802.8 km2)
Highest point: Sherman Peak
Archipelago: Alexander Archipelago