Navigating Mount Rainier's deadly ice caves for science - 1
Published 6 Oct 2018, 17:06 BST
Photograph by Francois Xavier DeRuydts, National Geographic
Eddy Cartaya, a team leader, measures ice density in a cave with Woody Peebles.
Photograph by Francois Xavier DeRuydts, National Geographic
A team member makes his way down the roped section of a crater that leads to Lake Adelie.
Photograph by Tom Wood, National Geographic
Cartaya and Peebles test the water of Lake Adelie.
Photograph by Tom Wood, National Geographic
Cave diver Katie Graham moves through a dangerous, gas-filled crater during a final survery of the system.
Photograph by Tom Wood, National Geographic
John Punches performs a mapping measurement inside a Mount Rainier ice cave.
Photograph by Francois Xavier DeRuydts, National Geographic
A researcher takes core samples using a robot that is being tested for future use on Mars.
Photograph by Tom Wood, National Geographic
