Concord Mound? X marks the spot

This is a stretch of Rt 62 in Concord, with the Great Meadows to the left and Hanscom Airfield to the right. About at the location of the crosshair, there is a mound of dirt. It is about 12 feet tall above the surrounding ground.

At the time, when I looked at the top of this bump, I thought someone had already been there and dug a hole in the top of it. Now I am not so sure of that interpretation. So for the record: there is a mound in Concord at about that spot. Perhaps someone will go check it out.