Located on top of the small ridge on the SW shore of the pond along the grey trail lies the large tooth like boulder with the obvious diagonal crack.

Hike down to the lake (green trail), cross the bridge (white trail), follow the grey trail on the map below and you can't miss it. Instead of going right after the bridge and continuing along the pond, the grey trail on the map continues up along the ridge of the small hill that rises after the bridge. It then turns into the blue trail. Boulder is on this ridge.