The surviving structures of the Denver mining plant hang precariously off a hillside above the town of Rodalquilar, located inside the Cabo de Gata Natural Park. The mine reached its peak during the 1950s, as the belief grew that vast deposits of gold were hidden underground. However, the state-sponsored enterprise failed to meet expectations and the mine was abandoned in 1966. In the summer of 1985, the site was turned into a post-apocalyptic prison camp for the film Solarbabies, with Jami Gertz and Jason Patric as rebellious rollerskating teens. The painted letters, still…