Tumbling Into Madness

fyeahuniverse:

Glacier Caving

300 feet into the Greenland ice sheet, these glacier cavers rappel into mammoth caves which are formed when geothermal vents or meltwater cut into the ice. The Greenland ice sheet covers 80% of Greenland and would rise global sea levels 7.2m if it were to melt.

(Image via National Geographic)

fyeahuniverse:

Glacier Caving

300 feet into the Greenland ice sheet, these glacier cavers rappel into mammoth caves which are formed when geothermal vents or meltwater cut into the ice. The Greenland ice sheet covers 80% of Greenland and would rise global sea levels 7.2m if it were to melt.

(Image via National Geographic)

(via throughascientificlens)