Taken from the original event posting:

Join Kevin Roche, Fairmount Park Conservancy staff member, hike leader, and Trolley Trail enthusiast for a hike through the park’s fascinating past and present! The Fairmount Park Trolley operated in East & West Park from 1896-1946 providing a reliable and enjoyable means of accessing park amenities. Explore the physical remains of what is now a hidden trolley network including massive stone tunnels and bridge abutments along this 4 mile loop hike.

More about the Trolley Trail:

Fairmount Park Conservancy–along with its key partners at Philadelphia Parks & Recreation (PPR) and the Belmont Plateau Trails Alliance (BPTA)–have been working to develop the Trolley Trail while pursuing key goals: reducing adverse impacts on habitat and preserving the single track mountain bike trails. The new Trolley Trail will wend its way close to bridge abutments and through tunnels dating back to 1897. Future phases will bring signage, maps and trail blazes to guide users through the vast reaches of West Fairmount Park once only accessible via the trolley. Read more here: https://myphillypark.org/trolley-trail-construction/

Estimated distance: 4 mile loop
Level: moderate
Terrain: mainly hilly trails