Before the first human settlement of the area, the ice cap on Coropuna was much larger than today, with its surface exceeding and its glaciers descending to much lower elevations. Additionally, glaciers also expanded from the mountains Pumaranra, Pucaylla and Cuncaicha to the east of Coropuna. They covered the Pampa Pucaylla northeast from Coropuna and descended the Jellojello valley and other valleys to the east. Glacial valleys radiate from Coropuna, and glaciofluvial landforms are associated with moraines.