Wikipedia
Ringvassøy
Ringvassøya is a large island in Troms county, Norway. It is divided between the municipalities of Tromsø and Karlsøy. Several islands surround Ringvassøya including Kvaløya to the south; Reinøya and Karlsøya to the east; Vannøya, Helgøya, and Nordkvaløya to the north; and Rebbenesøya to the north west.
With an area of , Ringvassøy is the sixth largest island in mainland Norway. The island's highest point, Soltindan, has a height of above sea level. The long Skogsfjordvatnet is the largest lake on an island in Norway.