Between Aspen and Leadville, Independence Pass is open in the summer. It can be a harrowing drive up from Aspen and a little easier, I think, up from Leadville. For these photos I drove up from the Leadville side in the summer and walked around a bit at the top of the pass.
I was able to see a group of female bighorn sheep with a few babies right off the road! It was fun to see them. I’ve seen male bighorns nearby as well though they are more solitary.