Detunata Goala Peak

Near Bucium in Romania's Apuseni Mountains, in Alba County, the bare peak of Detunata Goală is made of six-sided basalt columns that formed as volcanic rock cooled. Its neighbor, Detunata Flocoasă, stands about 1.5 kilometers away, and the area has been a protected geological reserve since 1936. Geologists have dated the youngest rock here to about 7.6 million years, while some accounts place the eruptions in the Pliocene. The name is read two ways: as "struck by lightning", or after the thunder-like sound of falling rock.