Mega-canyon discovered beneath Greenland ice sheet
August 30, 2013 — A colossal and previously unmapped canyon has been found under Greenlandâs ice sheet. The canyon is 750km long, almost twice the length of the Grand Canyon in Arizona. Graphic shows location of the Greenland Canyon A previously unknown canyon has been discovered in Greenland, hidden beneath the ice. It is at…
Read More “Mega-canyon discovered beneath Greenland ice sheet” »