The rockface in the pictures is called Cal Orko by the locals and was discovered recently in 1994, stretching 1.5 km. in length. It is the largest and the most important tracksite but is under constant danger of crumpling. Although $30 millions is being spent on protecting the site that goes upto 150 meters high, by the Bolivian authorities, a part of it crumpled this February destroying about 300 tracks.