Coraholmen is an island in Ekmanfjorden, at the northern side of Isfjorden. Since 2003 it is part of the Nordre Isfjorden nasjonalpark (National Park). The 3.3 kilometers long island is named after the fossil species Productus Cora, a shell fossil that is commonly found on the island.
The island used to be a relatively flat tundra, but in 1896 the nearby glacier Sefströmbreen surged and slowly bulldozed through the fjord, pushing its moraines onto the western half of Coraholmen and on the nearby island Flintholmen. The red dirt of the moraines creates a beautiful contrast against the grey mountaintops that surround the island.