Alone: The Skills Challenge

Three of the strongest Alone participants take on a bushcraft challenge devised by one of their own--build an Earth Shelter in three days using just a few surprise tools.

Former Alone participants Lucas Miller, Callie North and Britt Ahart compete to show off their skills. They must build a Bushcraft Bridge in three days using a few simple tools.

Building a wilderness survival shelter is far from simple, but it's even tougher to keep dry when it rains and smoke-free with a campfire lit.

This week's challengers tackle a complicated build - crafting a working oven from all natural materials, like sand, wood and water.

The challenge for participants Joel van der Loon, Jordan Jonas and Clay Hayes is to build in three days using only three tools a 4m elevated shelter that's safe from predators.