Quelccaya Ice Cap.
The Quelccaya Ice Cap (also known as the Quenamari Ice Cap) is the second-largest glaciated area in the tropics, after Coropuna. Located in the Cordillera Oriental in Peru's Andes, it covers an area of 42.8 square kilometres (16.5 sq mi) with ice up to 200 metres (660 ft) thick. It is surrounded by tall ice cliffs and a number of outlet glaciers, the largest of which is known as Qori Kalis Glacier. Quelccaya is an important source of water, eventually nourishing the Inambari and Vilcanota Rivers. It is regularly monitored and has a weather station. Quelccaya was much larger in the past, merging with neighbouring glaciers during the Pleistocene epoch. After reaching a secondary highstand (area expansion) during the Little Ice Age, Quelccaya has been shrinking due to human-caused climate change. Models predict that without aggressive climate mitigation measures, Quelccaya is likely to disappear during the 21st or 22nd century.
