Stretching across 36.5 kilometers (22 miles), the crater was likely formed by an asteroid impact within the past 2.6 million years, according to a study published Monday in Geophysical Research Letters.
In November, NASA announced that it had spotted the first subglacial impact crater buried under Greenland’s Hiawatha Glacier, located just 183 kilometers away from the new site.
Inspired by that discovery, a team led by NASA glaciologist Joseph MacGregor started scanning Greenland for other craters.
Read More: Scientists Discover Hidden Asteroid Crater Under a Mile of Greenland Ice
Based on the estimated age of its ice sheet cover, it was formed at least 79,000 years ago, the team said.