American glacier trekking guide Jared Carlson snapped the eerie pictures a quarter of a mile into the Mendenhall Glacier, in Alaska, while taking on the vertical shaft with fellow climber Jason Nelson.
Sprawling £3.25m Georgian estate on sale for first time in 254 years
Christie's International Luxury Real Estate in Kendal, North West England represented by Will Parry of Strutt & Parker: Harrogate. MLS# - Exclusive Apartments / Flats with 5 bedrooms 4 bathrooms Guide For more information, visit
The stunning pictures in National Geographic's Traveler contest