Bears on the bridge. Yellowstone national park. 

A female black bear and her three yearling cubs cross the bridge over the Yellowstone river in Yellowstone National Park. This is the same bear family that appeared in a video crossing the very same bridge a little while ago. In that particular video people were screaming, the bears were panicking and the whole thing turned into a complete mess. This time Yellowstone park rangers were present and kept everyone of the bridge during the crossing. So Rosie and her cubs had the entire bridge to themselves, as it should.