Kong Karls Land in the context of "Olgastretet"

Kongsøya is an island in Svalbard, Norway. It is the largest of the islands in King Charles Land (Kong Karls Land). Its area is 191 square kilometres (74 sq mi). The other main island in the chain is Svenskøya.

Svenskøya (English: "Swedish Island") is an island in Svalbard. It is the second largest island of Kong Karls Land with an area of 137 km².

Svenskøya is separated from Kongsøya by the strait Rivalensundet. The island is separated from Edgeøya and Barentsøya by the strait Olgastretet.

Nordaust-Svalbard Nature Reserve (Norwegian: Nordaust-Svalbard naturreservat) is located in the north-eastern part of the Svalbard archipelago in Norway. The nature reserve covers all of Nordaustlandet, Kong Karls Land, Kvitøya, Sjuøyane, Storøya, Lågøya, Wilhelm Island, Wahlbergøya and a small section of the north-east corner of Spitsbergen. The reserve is 55,354 square kilometres (21,372 sq mi), of which 18,663 square kilometres (7,206 sq mi) is on land and 36,691 square kilometres (14,166 sq mi) is on water—making it the largest preserved area in Norway (including national parks). It includes the largest glacier in Norway, Austfonna, as well as Vestfonna and parts of Olav V Land. The reserve has been protected since 1 July 1973 and borders in the south to Søraust-Svalbard Nature Reserve.

Rivalensundet is a strait in the Svalbard archipelago, separating Kongsøya from Svenskøya both in Kong Karls Land. It has a width of about 14 nautical miles. According to historical records, the strait was discovered in 1859, and first sailed in 1889. It is named after the vessel Rivalen.