The canyon, formed through the erosion of the Jurassiclimestone of the mountain, is 2 900 m long[1] and the walls have heights reaching 300 m.[1] The total surface of the canyon is of 324 ha.
Cheile Turzii contain one of the richest and most scenic karst landscapes in Romania. More than 1000 plant and animal species (some of them rare or endangered, like the wild garlic or some species of eagle) live here.