The High Coast is a part of the coast of Sweden on the Gulf of Bothnia, situated in the municipalities of Kramfors, Härnösand and Örnsköldsvik and notable as a type area for research on post-glacial rebound and eustacy, in which the land rises as the weight of the glaciers melts off of it. This phenomenon was first recognised and studied there; since the last ice age the land has risen 800 m, which accounts for the unusual landscape with tall cliff formations. The High Coast is part of the Swedish/Finnish High Coast/Kvarken Archipelago World Heritage Site (the High Coast was joined with the Finnish Kvarken areas in 2006).