Sullivan's March. Gen. John Sullivan's army camped on the nearby river lowlands Aug. 8-9, 1779 en route to attack the Six Nations Iroquois. Sixth camp between Wyoming and Fort Sullivan. U.S. 6, ~6.2 miles NW of Wyalusing, Standing Stone, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap