Nevado Sajama rises about from the surrounding terrain to a height of (earlier estimates of its height are ), making it the highest mountain of Bolivia. Below the mountain is characterized by parasitic vents and a cover of lava fragments and volcanic ash. Two secondary summits and occur west and east-northeast from Sajama respectively; the former is named Cerro Huisalla and the second is called Huayna Potosi. The mountain has a conical shape and is capped by a summit crater that owing to its ice fill appears to be linked to the flat summit plateau of Sajama but other records do not indicate the presence of a crater. The Patokho, Huaqui Jihuata and Phajokhoni valleys are located on the eastern flank; at lower elevations the whole volcano features glacially deepened valleys.