14/08/2014 12:54 BST | Updated 22/05/2015 06:12 BST

Girl, 13, Survives Huge Rock Slide That Kills Her Parents On Family Hike

Rural dirt road leading into the hills and forest around the Princeton area of British Columbia's interior

A 13-year-old girl miraculously survived after a huge rock slide crushed her parents with boulders the size of cars while out for a family hike.

Gracie Johnson, who has two siblings, suffered a broken leg in the mountain disaster and was flown to Children's Hospital of Denver, Colorado on Monday.

But her parents - Dwayne and Dawna Johnson – were among the people killed. Gracie, her parents and other hikers were buried on a short mile-and-a-half trail at Agnes Vaille Falls near Mount Princeton - 130 miles southwest of Denver.

Chaffee County Sheriff Pete Palmer said: "They are in bad shape. They were rolled over by boulders as big as these cars. There is no one alive up there."

Large amounts of rain had previously fallen on Mount Princeton, which could have contributed to the boulders coming loose and sliding down the mountain.

The trail is popular with day hikers because it offers just a short, rocky scramble to the spectacular Agnes Vaille Falls. The trail is below Mount Princeton, a 14,197-foot peak. The National Forest Service describes the trail as short and relatively easy.