Incahuasi Central Volcanic Zone of the Andes together with about 110 other Quaternary volcanoes, and lies in the southern sector of the volcanic zone; other volcanic zones in the Andes are the Northern Volcanic Zone, the Southern Volcanic Zone and the Austral Volcanic Zone. The history of volcanic activity is poorly known for most of these volcanoes owing to the lack of dating; only a few historical eruptions have been recorded, such as an eruption at Ojos del Salado in 1993. Incahuasi is located northeast of Ojos del Salado, the highest volcano in the world. Both volcanoes are found at the
Sawatch Range Sawatch Range The Sawatch Range is a high and extensive mountain range in central Colorado which includes eight of the twenty highest peaks in the Rocky Mountains, including Mount Elbert, at elevation, the highest peak in the Rockies. The range is oriented along a northwest-southeast axis, extending approximately from in the north to in the south. The range contains 15 peaks topping , also known as 14ers. The range forms a portion of the Continental Divide, and its eastern flanks are drained by the headwaters of the Arkansas River. The western side of the range feeds the headwaters of the