Tri-States Rock

"Also known as the Tri-States Rock, the monument was set in place in 1942, replacing earlier, less permanent, or damaged markers. Approximately a half cubic yard in size above bedrock, "Tri-States Monument" is chiseled into the north face. The top is engraved with the initials of the three states and grooves symbolically representing the state boundaries. The federal survey disc, a triangulation station now under the jurisdiction of the National Oceanic and Atmospheric Administration, dates from the same year."