Glacial geology
One of the state's great erratics
If Tripod Rock is the park's showpiece, Bear Rock is its heavyweight: a massive glacial erratic widely reckoned among the largest in New Jersey. It rests in the valley below the Tripod Rock ridge, beside the wetland known as Bear Swamp, where the last ice sheet dropped it. It has been a landmark here for centuries — and it sits squarely on the boundary between Kinnelon Borough and Montville Township. A broad overhang along one face gives the rock the look — and, by long tradition, the use — of a natural shelter.
