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Pomerape is a stratovolcano lying on the border of northern Chile and Bolivia (Oruro Department, Sajama Province, Curahuara de Carangas Municipality). Map of Curahuara de Carangas Municipality and population data. It is part of the Payachata complex of volcanoes, together with Parinacota Volcano to the south. The name "Payachata" means "twins" and refers to their appearance. It hosts down to elevations of , lower on the northern slope.
Pomerape is a complex of , accompanied by lava flows which were emplaced atop of the domes. (1994). 9789562020541, Instituto geografico militar. ISBN 9789562020541 It was active about 200,000 years ago. (1994). 9783642773556, Springer Berlin Heidelberg. ISBN 9783642773556 The lava domes formed first and were later buried by the actual volcanic cone, which unlike the rhyolitic-dacitic domes is formed by hornblende andesite. The "Chungará Andesites" and lava dome complex of Parinacota were laid down at this time. Pomerape is associated with an adventive vent that has erupted mafic magmas. The main cone was last active 106,000 +- 7,000 years ago, the adventive vent is dated to 205,000 ± 24,000 years ago. (1994). 9789562020541, Instituto geografico militar. ISBN 9789562020541
Climbing the volcano is alpine grade PD by the east ridge. (2025). 9780953608768, Andes. ISBN 9780953608768 Harder routes exist on the south face, sometimes on 50+ degree snow/rubble slope. For these routes a camp can be established at at the saddle between Parinacota and Pomerape. Depending on the season, the main difficulty can be penitentes (tall ice-blade needles), which make the ascent physically difficult or impossible.
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