Festningen Geotope Protected Area (Norwegian: Festningen geotopvernområde) is located at the outermost edge of Grønfjorden's mouth to Isfjorden on Nordenskiöld Land, Spitsbergen in Svalbard, Norway. The profile is a cliff which runs along the coast from Kapp Starostin to Festningsodden. It covers an areas of 16.6 square kilometres (6.4 sq mi), of which 14 square kilometres (5.4 sq mi) is on land and 3 square kilometres (1.2 sq mi) in the sea. Barentsburg is the closest settlement, located 6 kilometres (4 mi) away, across Grønfjorden. Festningen was protect on 26 September 2003, as part of a major expansion of the protected areas in Svalbard. The protected areas is administrated by the Norwegian Directorate for Nature Management and the Governor of Svalbard.