Wondering about the nature of Klintekongen, I have come upon a concept of Landvættir:
Landvættir (“land wights”) are spirits of the land in Norse mythology and in Germanic paganism. They protect and promote the flourishing of the specific places where they live, which can be as small as a rock or a corner of a field, or as large as a section of a country.
P.S.: Petrified belemnitida that are common on the beaches of Møn are still being called vættelys(the light of vætte).
Making Land initiative 