Climate.

The temperature, even in the warmest months of the year, drops far below zero. Blizzards are common and rain storms are a part of the daily routine. 

Another fact that really has to be taken into account is the altitude of the area. The average is close to 5000 m and everyone who have been on altitudes like these knows how extremely taxing this is. Another factor that will make our life rough, is the strong sun. We have to be very careful not to expose lips and other sensitive areas of our bodies. In the cold and dry air, wounds heal up to ten times slower than under normal conditions.