What happens when humans scale the highest peaks?

Mountains are beautiful places that attract hikers, climbers, and skiers. Good preparation and the right equipment help keep people safe, but sometimes accidents happen. Avalanches, snowstorms, and rock falls are just some of the dangers. Find out how real people have survived and made it safely off mountains, from Aron Ralston getting trapped in a canyon, to a group of skiers getting buried under an avalanche.