wild horses?

I've seen them in the Bookcliffs east of Grand Junction.

Go to the San Luis Valley, go to Fort Garland and turn south on black top road. You will eventually come to a little town of San Luis. Take black top west toward Manassa. Wild and feral horses are thick as cockroach's. Just stop and use a good pair of binoculars or spotting scope and you will see plenty of horses running wild

I've seen them near death valley in California. If they can live there they can live any where.