Last November, scientists’ minds were blown by the discovery of a 19-mile-wide crater under Greenland. The crater had been hiding in plain sight just 150 miles from a major air force base. Scientists flying airborne surveys with NASA’s Operation IceBridge found it serendipitously while testing their equipment while en route to collect Arctic data. And, on Monday, the same group announced they’ve found another potential impact crater that’s even larger, and it sits just over 100 miles from th