Ice! Only 16,000 years ago, Maine and New England were covered by a huge glacier which extended all the way offshore to the coastal shelf! Cape Cod and Long Island are the furthest obvious extent in the northeast; think of how a plow pushes snow at the end of your driveway.
At that time the ice over “Sabbathday Lake” and all of Maine was about one mile thick (5000’ +/-). Glaciers grow, and then they retreat. The climate warmed up and the glacier started melting (retreating). About 12,500 years ago it had receded to the northwest and the area around Sabbathday Lake was free of ice.Continue reading