Shoggoth encounter? Nope, the Northern Lights filtering through ice, in the White Sea, the Arctic Circle. By the Irish photographer George Karbus.
Rock globules, Moeraki Beach, New Zealand. Photo by Sterling/Wikipedia.
Salar del Uni, Bolivia. Photographer unknown.
Guyaju caves, of unknown age or origin, China. Photographer unknown.
Fog rising in Lyndonville, Vermont. By NEKPhotography.
Abandoned vessel and Grain Terminal, Red Hook, New York. Photo, Alex Rabb.