Wild Mustangs at Dawn

I was up much of the night practicing my astrophotography (none of them came out great) and woke up in time for the sunrise in Theodore Roosevelt National Park. As I was about to walk back to my truck someone passed by, and a short while later I saw a cloud of dust. I figured the car ahead of me scared something and got them running. I thought it might be bison, and was pleasantly surprised to see wild mustangs heading in my direction. I was able to capture a few action shots of them, as well as this one of them going up the butte. The timing was perfect and made my whole day.