The Blue Hills Felsenmeer features talus slopes and is an outstanding location for geological interpretation of glacial action. The natural area consists of several small valleys, strewn with lichen-covered rocks. The felsenmeers (meaning "sea of rocks") were formed by excessive frost activity. Quartzite, being a brittle rock, is very susceptible to frost wedges.
Cold air emanating from deep within the slopes maintains a tundra-like environment. Several species with boreal and tundra affinities are still present, and the lichen flora is diverse.