Laguna Viscacha is a high mountain lake at an elevation of 4.614m (15,137ft) above the sea level, located in Mariscal Nieto Province, in Peru.
The road to the summit is called 36A. It’s asphalted and pretty steep. Do not travel this road in severe weather conditions. It has a well-deserved reputation for being dangerous because of unpredictable snowstorms and blizzards, and driving under these conditions, can be extremely challenging. 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.