Ascend a small hill to where a massive granite monolith left by the last glacier juts into the sky, then pass a swamp where another huge boulder has sat as silent witness for millennia. Big and Little Rocks are dramatic examples of giant boulders plucked from bedrock and carried far away by the last glacier. A short loop trail leads up Beaverdam Hill where Little Rock appears as a giant granite monolith silhouetted against the sky. It rests – seemingly precariously – on a small jagged stone, leaving an opening below. A short distance away, other boulders lie perched on the edge of this glaciated upland. Below, in a small shrub swamp, rests thirty-foot-tall Big Rock. No one knows how far below the ground it is buried. As the glaciers scoured this landscape, the mass of bedrock forming the hill proved more resistant than the surrounding soil, forcing the bottom of the glacier up and over the hill. The north side was smoothed and the south side left steep and rugged as the glacier broke off chunks of rock as it passed.
In 2022, this site was renamed to “The Monoliths” from “Agassiz Rocks”.