In this Dec. 16, 2015 photo, Aymara indigenous women walk through the fog with their guide, up the Huayna Potosi mountain on the outskirts of El Alto, Bolivia. As they climb, the women wear thermal sweat suits under their traditional “cholita” clothing. Only in the last part of the climb up to the top do the women remove their skirts, to prevent accidents. (AP Photo/Juan Karita)