Ancient lake basin found in Greenland

Sub-glacial lakes beneath the Greenland Ice Sheet is nothing new, but a team of scientists have discovered the existence of an ancient lake “basin” thought to be hundreds of thousands if not millions of years old! This may confirms that the Greenland was not covered in ice at the time the lake basin was filled with water. More here: https://www.sciencealert.com/ancient-lake-discovered-under-greenland-may-be-millions-of-years-old-scientists-say