Roslyn · Montgomery County · PA
Twining Valley Park Tunnel is a 0.2-mile moderate trail near Roslyn, in Montgomery County, PA. It climbs 38 ft and descends 24 ft, between 306 ft and a high point of 331 ft. Moderate difficulty: calculated from 7% avg grade · 0.3 mi round trip, 61 ft climb. The surface is asphalt. Mapped for hiking, trail running, mountain biking.
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Trail data © OpenStreetMap contributors (ODbL). Elevation: USGS 3DEP. Open the interactive map for routing, weather, and offline use.