Mega-Canyon Discovered In Greenland [VIDEO]: Twice The Size Of Grand Canyon In Arizona: 460 Miles Long, Half A Mile Deep

Mega-Canyon discovered in Greenland by researchers from Bristol University in the United Kingdom, which is reportedly twice the size of the Grand Canyon in Arizona.

According to Bristol University, it's called the Mega-Canyon because it is more than 460 miles long and nearly half a mile deep. Scientists were able to piece together the landscape in Greenland, using thousands of kilometers of radar data, according to USnews.com.

This Mega-Canyon hasn't been discovered until the researchers revealed their findings on Friday, though it's an area that has been studied for quite some time now. NASA, along with researchers from the U.K. and Germany, have been flying over the region for several decades collecting radar data by beaming radio signals through the ice sheet.

The canyon was visible through NASA-collected radar data and the canyon plays a vital role in transporting sub-glacial melt water from inland Greenland into the ocean, according to the researchers.

"With Google Streetview available for many cities around the world and digital maps for everything from population density to happiness, one might assume that the landscape of the Earth has been fully explored and mapped," Jonathan Bamber, professor of physical geography at Bristol University and lead author of the study told USnews. "Our research shows there's still a lot left to discover."

This discovery is one step in what one theorist said could be a cause for the rise in elevation.

"A 750 km canyon preserved under the ice for millions of years is a breathtaking find in itself, but this research is also important in furthering our understanding of Greenland's past. This area's ice sheet contributes to sea level rise and this work can help us put current changes in context," Ice2sea Coordinator David Vaughan said in a statement.