According to www.standingstonetrail.org, "the valley to the west of the SST is the historic Native American trail called the Standing Stone Path, which connected Fort Littleton with Fort Standing Stone, today called Huntingdon." Over the last two centuries, the area has been utilized by countless coal mining and logging operations, the remnants of which can be seen along the way.

The Greenwood Spur connects the Standing Stone Trail to the 300+ mile long Mid State Trail by way of Alan Seeger Natural Area. If thru-running, take the opportunity to resupply at concession stand within Greenwood Furnace State Park before heading north. After passing the Greenwood fire tower, the trail quickly dips into the Alan Seeger Natural Area - an area coveted for its ancient hemlocks, beautiful rhododendron, and pristine mountain streams.

The Greenwood Spur Trail terminates at the Mid State Trail in Detweiler Run Natural Area. Take a left on the MST to access the trailhead at the junction of Bear Meadows Road and Detweiler Run Road. A State Forest campsite lies just below the switchback on the road and can be reserved here.

Sources: https://www.standingstonetrail.org