Hence the allusion to Halo, where you go to unbelievable places to locate the skulls. These are prizes used to advance in the game. Getting to some of them and back reminds me of this bizarre place.It is some kind of old water works/dam in Spain, only 4 people died on it in 1999
Caminito del Rey - Wikipedia, the free encyclopedia
I wish I had known about it when I went to Spain a few years ago, the place looks like a video game setting !