Colorado border, has shown that the number of horses gathered were on a large scale. There are still remnants of a juniper drift fence, which has a six mile circumference in the Upper Powder Spring Basin. Above the basin, is a ridge of sandstone, which provided a clear vision of approaching enemies, and had several low ceilinged rock shelters, some of which still have rock and juniper log reinforcements for protection of warring parties. The ceilings of the rock shelters contain charcoal drawings depicting horse raids. This area was in the northern most area of their territory, and it enabled them to travel north and northeast to obtain horses from not only the Shoshones, Bannocks and Arapahos, but also emigrants and early ranchers. Again, horses escaped during the fast and furious raids while the Utes were being chased by their enemies, and again, some survived and became feral.
Ranchers also contributed to the lineage of the horses in Sweetwater County. Horses were raised on the open range and gathered once a year, and as many as 1400 head were sold. Many had Morgans, Standardbreds, Army Remount Thoroughbreds, and Tennessee Walkers turned into their herds to improve the bloodlines.
Some Survived and Became Feral