Kelpius Cave Loop
The Kelpius Cave Loop Hike at Wissahickon Valley Park in Philadelphia, Pennsylvania is a 0.9-mile hike that leads from Hermits Lane over to a small hillside cave known as Kelpius Cave (aka Hermit's Cave).The hike itself starts at the trailhead road gate and leads down to the Yellow Trail. Once you're on the Yellow Trail, be on the lookout for a sign post labeled "Hermit's Cave 0.1 miles" to your right. Take this right until you reach the Kelpius Cave (Hermit's Cave).
Upon leaving the cave, stay left and take the trail down to Wissahickon Creek and the Lincoln Drive Trail. Follow the Lincoln Drive trail north until you find a small stone bridge that leads across the creek and onto Lincoln Drive. Take the trail opposite of the stone bridge back up to parking - this is yet again the Yellow Trail.
Yellow blazes: most of this trail follows yellow blazes on the sign posts.