Around 9,000 feet, you run into camps that have long-term use. The most interesting thing is the variety of stuff. A tool made from a bison's jaw was found in a cave. These beefy animals vanished 10,000 years ago. About 700 years ago, the Fremont built stone walls to funnel pronghorn antelope into corrals made of brush.
Points used for the slaughter still speckle the ground.
Anasazi houses line cliff walls. Written records tell of the Navajo, Shoshone, and Piute. Early rancher John King said wild game was plentiful, and constituted the main part of the Piutes' diet. Grass seed was gathered and ground into meal. But what American Indians saw as food, white settlers saw as cattle feed.