Black Bears Chase Visitors in Yellowstone National Park

A trip to Yellowstone National Park took a terrifying turn for tourists who were chased by a family of black bears.

A black bear and her three cubs surprised the tourists when they appeared on a bridge lined with sightseers earlier this week, sending them running.

In a video released by Montana Fish Wildlife and Parks, sightseers run as the mother bear, seemingly equally terrified and confused, charges one family as they scramble to get to their car.

More