Caylloma Mine
Mina Caylloma is an open-pit mine at an elevation of 4.947m (16,230ft) above the sea level, located in the Arequipa Region of southern Peru.
The road to the summit is a mine trail climbing up to Mina Caylloma, a copper, gold, lead, silver and zinc mine. The road is gravel. Located in the Andes Mountains of Peru, the climb is simply terrible, with a notorius lack of oxygen that tests the organisms and a high degree of steepness. Most people feel altitude sickness at around 2,500-2,800 meters. Near the summit, oxygen is in short supply. Expect harsh weather, extreme solar radiation and very high winds all together mixed with low temperatures.
Pic: http://mineriaperu.com/2018/03/caylloma-aumenta-en-8-y-6-produccion-de-plomo-y-zinc-en-el-2017/