The valley is located in the Swartberg mountain range, which is part of the Garden Route District Municipality, Western Cape Province, South Africa.
Some time later, the Marais, Cordier and Joubert Nel Mostert families settled in the valley, growing to a community of around 160 people.
Ironically, this led to the depopulation of the community, with the local children attending high schools in the nearby villages and most of them refusing to return to a life of subsistence farming in the valley.
One popular story is that an animal inspector named Piet Botha visited the valley in the 1940s, using a particularly difficult route known as Die Leer on Kleinberg, and subsequently described the experience as "hell".
The residents of Gamkaskloof are averse to the name Die Hel, and refer to themselves as Klowers (the Afrikaans word for 'Canyon dwellers').