Crossing Herd Causes 'Bison Jam' at Yellowstone

A driver in Yellowstone National Park was halted in her tracks by a large herd of bison on the road, footage posted to Facebook shows.

The footage was shot by Cindy Shaffer, a Montana native who regularly posts footage from visits to Yellowstone National Park and the nearby Grand Tetons National Park.

Shaffer said she was driving through the park on October 21 when she found the herd crossing the road. In the footage, Shaffer says the herd had just crossed a river before they made it onto the road. Credit: Cindy Shaffer via Storyful

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