These American bison are following an ancient pathway along the Gibbon River in Wyoming. The well-worn trail has been carved into the turf by the hooves of many.
Here’s a slightly closer view of the bison. Though they may look docile, you don’t want to get too close to these animals that can weigh up to 2,000 pounds and travel at speeds up to 30 miles per hour. I photographed them while safely inside the car.