
Adventurers seek new and extreme challenges.

A group of climbers attempts to descend into an active volcano to get as close as possible to the spitting lava lake; they brave poisonous gases and searing heat climbing into the earth.

Sebastian Copeland and Eric McNair cross the Greenland ice sheet.

Stefan Glowacz and Chris Sharma descend into Majlis al Jinn in Oman, the second largest known cave chamber on the planet, located about 1500 metres above sea level.

Professional whitewater kayakers attempt to set a new world record by kayaking the steep Angels Wings Falls, of the Rio Santo Domingo Canyon, in just one day.