Glacial lake Glacial lake A glacial lake is a lake with origins in a melted glacier. They are formed when a glacier erodes the land, and then melts, filling the hole or space that it has created. Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create lakes. This is apparent in the Lake District in Northwestern England where post-glacial sediments are normally between 4 and 6 metres deep. These lakes
Noon Hill (reservation) including land owned by the town of Medfield and The Trustees of Reservations' Shattuck Reservation located to the northwest of Noon Hill along the Charles River. The rugged, rocky terrain of Noon Hill was formed via glacial action during the last ice age through glacial plucking and scouring. Holt Pond, the dammed flow of Sawmill Brook, was constructed circa 1764 to service colonial era mills. Other parts of the property were used as pasture land. Noon Hill was acquired in 1959 as a gift of W. K. Gilmore & Sons; additional land was given by other donors in 1960, 1963,