🏝️ Seiland

Seiland (Norwegian) or Sievju (Northern Sami) is a substantial island off Norway's northern coast, covering about 600 square kilometres (230 sq mi). It is the eighth largest island in Norway proper, located in Finnmark county. It sits within the Caledonian orogenic zone, a mountain‑building belt formed during the Paleozoic. The southern and western parts of the island consist mainly of gabbroic rocks, marking the northeastern end of a basic petrographic province that extends more than 100 km to the southwest. The 583-square-kilometre (225 sq mi) island is divided between the Alta and Hammerfest municipalities.