Girl, 13, Is Sole Survivor of Rock Slide That Killed Family

Gracie Johnson's father saved her life before he was killed along with her mother and sister.
1:21 | 10/01/13

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Transcript for Girl, 13, Is Sole Survivor of Rock Slide That Killed Family
We begin with new details overnight about a deadly rockslide in colorado. A family on a hiking trip, turning into a virtual nightmare. A father saving his young daughter's life. Clayton sandell has their story. Reporter: This morning, investigators will be back at a popular colorado hiking trial that's now a graveyard. They stated that a whole, huge rockslide came down. Part of the mountain fell. Reporter: A massive rock avalanche, killing five members of the same family. Some boulders more than 100 tons. Deputy nick tollsma arrived first. I heard a scream next to me. And I saw a hand sticking out. Reporter: He helped dig out the sole survivor, 13-year-old gracie johnson. The true hero here is her dad. She said that her dad jumped on top of her to protect her. Right at the last moment when the rocks were coming down. Reporter: Sources tell abc news that gracie's father, a high school football coach, along with her mother and a sister, did not survive. The victims' names have not been officially released. How much warning do you think these folks had? They had no warning. Reporter: A freak accident on what was supposed to be a family hike. For "good morning america," clayton sandell, beuna vista, california.

This transcript has been automatically generated and may not be 100% accurate.

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