Pekel was attested in written sources circa 1500 as in der Hell. The name is pronouncedPêkel (corresponding to the dialect pronunciation of the common noun pêkel 'Hell') rather than the more standard Pekèl. Across Slovenia there are many oronyms, regional names, and microptoponyms named Pekel. In folk geography, the name was used to metaphorically designate chasms, caves, shafts, and other narrow, dark places; for example, in Kropa there is an oeconymPekel originally referring to a blacksmith's shop. Semantically related names in Slovenia include Devil's Hole (Slovene: Vragova luknja) in the settlement of Okrog and Devil's Ravine (Slovene: Hudičev graben) in the settlement of Parož. See also Pekel, Trebnje and Hell Cave.