L'Infini

"Eindeloos" once was a popular tourist attraction. People from all over the world came to see the subterranean wonders of the huge cave system. But this came to an end when an alien super-being was awakened by an exploration on one of Neptune's moons. Angrily, the super-being directed his eyes to Earth and took up residence in "Eindeloos" and turned it into a fortress.