A Mount Everest veteran tells CBS News why retrieving "Green Boots," whose remains have become a grim waypoint for climbers, would be a perilous mission.

Pertenecía a una expedición india que sufrió un accidente en mayo de 1996: hubo tres desaparecidos: no se sabe cuál de los tres es 'Botas Verdes'.

In 1996, a blizzard in Everest’s notorious ‘death zone’ killed ‘Green Boots’. Now, a fresh expedition plans to retrieve his body, and establish his identity