'Bison Jam' in Yellowstone National Park Halts Traffic

Drivers near Yellowstone National Park were slowed down by a herd of bison that took to the roads, footage posted to Facebook on April 26 shows.

This footage, shot by Montana native Cindy Shaffer, shows her slow journey through the National Park as she encounters one “bison jam” after another.

Shaffer regularly posts footage from visits to Yellowstone National Park and the nearby Grand Tetons National Park. Credit: Cindy Shaffer via Storyful