The bear was a mother to at least 18 cubs over the years and a documentary star. Now, the internet is mourning her death after she was hit by. a car.

Grizzly Bear 399 was killed on Tuesday in a car collision south of Jackson, Wyo., the National Park Service said. She was fatally hit by a vehicle on Highway 26/89 in Snake River Canyon and was later identified by her ear tags and microchip. The mama bear had a yearling cub with her at the time, but it’s still missing.