(This post originally appeared on Andrew King’s Ottawa Rewind blog)
Over 10,000 years ago a body of water covered the City Of Ottawa called The Champlain Sea, a deep sideline of the Atlantic Ocean. It occupied a depression created by a continental glacier, and then it drained away as the giant glacier that once covered the northern hemisphere disappeared and the earth rebounded back into shape. Now its only remnants are the Ottawa and St. Lawrence Rivers. However, sand dunes were left to remind us of its former existence, sand dunes that exist hidden in the forests south of Ottawa off Slack Road. These dunes were a result of wind and water carrying sand left by the massive glacier into the sea by glacial rivers that once cut through through the glacial deposits. These sand dunes exist today, but are disappearing fast.