Scientists believe they found new Grand Canyon in Greenland
Greenland (KTNV) -- Scientists, with help from NASA radar imaging, said they've found a new Grand Canyon in Greenland.
The "Mega-Canyon" was hidden under a massive sheet of ice.
Scientists from the University of Bristol said it's 460 miles long. That's almost 200 miles longer than the Grand Canyon in Arizona.
But the "Mega-Canyon" isn't nearly as deep.
Researchers think it's been hidden for four-million years.