Rogen moraine

Rogen Nature Reserve serves to protect the unusual area.

[1] The individual moraines are large, wavy ridges orientated transverse to ice flow.

[1] The exact mechanics of Rogen moraine formation are not known, but since the 1970s, several theories on the formation have been proposed:[2] However, it has been suggested that, due to the diversity of morphological characteristics displayed by Rogen moraine, different processes might be able to create the landform.

The different theories that proposed a formation near or at the glacial margin have largely been abandoned.

[1] Some of these theories proposed that Rogen moraines had an origin as a series of end moraines, that they formed in association with calving ice termini in glacial lakes, or that Rogen moraines formed in dead ice, where supraglacial material fell down into crevasses in the ice.

Lake Rogen, Sweden as seen from the north. The forested ridges in the lake are 'Rogen moraines' of which this is the type location