Three Sisters is a set of three large rock pillars standing on a ridge top in Rocky Ridge Natural Area, part of Rothrock State Forest. The Department of Conservation and Natural Resources reports that the state forest totals over 96,000 acres across Huntingdon, Centre and Mifflin counties. The formations stand along the Standing Stone Trail, which the trail club says passes through Rocky Ridge Natural Area.
The hike is a one-mile out-and-back walk on the orange-blazed Standing Stone Trail, just under a half-mile each way. It starts at a trailhead on Frew Road, a state forest road with pull-off parking, and climbs about 300 feet to the ridgetop. Once there, the trail winds through the rock. A yellow-blazed bypass trail runs below the ridgeline. It is less rocky, though it does not shorten the hike.
In season, wildflowers bloom at the foot of the pillars, and in autumn the area is full of fall color, according to the author, Rusty Glessner. Rock climbers frequent the area. The article encourages hikers to follow Leave No Trace principles.
- A one-mile out-and-back hike, about a half-mile each way, on the orange-blazed Standing Stone Trail. source
- About 300 feet of elevation gain from the road to the ridgetop. source
- Trailhead on Frew Road, a state forest road, with pull-off parking next to it. source
- A yellow-blazed bypass trail runs below the ridgeline and is less rocky. source
- The Standing Stone Trail Club home page names Rocky Ridge Natural Area on the trail's northbound route. source
“Roughly 150 yards of ridgeline around the Three Sisters in nothing but massive rock formations, one of the reasons so many rock climbers are drawn to this area.”Rusty Glessner, PA Bucket List, 19 March 2024
“The formations are not just geological wonders but also natural sculptures that spark the imagination.”Rusty Glessner, PA Bucket List, 19 March 2024