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
Soldier Mountains trails are located in the mountains, which provide for a variety of activities including hiking, off road vehicle riding, fishing, and hunting. Most of the peaks can be accessed relatively easily via class one or two routes. Soldier Mountains The Soldier Mountains are a mountain range in the U.S. state of Idaho, spanning northern Camas and eastern Elmore counties. The highest point in the range is Smoky Dome at , and the range is bounded on the west and north by the South Fork Boise River. The mountains are located within Sawtooth National Forest north of Fairfield, Idaho. The Soldier