Cerro Tololo is a high mountain pass at an elevation of 2.207m (7,241ft) above the sea level, located in the foothills of the Andes, in the Coquimbo Region of northern Chile.
The road to the summit is a well-developed graded gravel road. Near the summit, the last part of the road is asphalted. It’s pretty steep. At the summit there are many NOAO telescopes.