Pre-Revolutionary War era Pine Grove Cemetery, a long-forgotten plot approximately a half-acre in size, once marked the center of the hamlet of Johnsontown near what is known today as Lake Sebago in the town of Stony Point.

In the 1920s and 1930s, this hamlet was destroyed by the Palisades Interstate Park Commission by removing a dozen small communities by demolishing their homes, schools, churches, farms and businesses and turning the vacated land into forests, meadows, lakes, picnic groves and swimming facilities.

Presently, hundreds of descendants of those families live in nearby Stony Point, Tomkins Cove, Fort Montgomery and other adjacent communities.

The remaining stones are fairly small fieldstones stuck into the ground in upright positions but with no inscriptions of any kind, meaning that there is no way to identify where most of the inhabitants are actually buried.

Besides placing the marker, historical society members and Palisades Interstate Park System cleared the tremendous amount of underbrush and overgrowth that had virtually obliterated the ancient cemetery over the past century.