Meet HLs Dee McGrath, 610-331-7410 (C),Mike Miller, 610-350-6114, for a moderate hike in the woods. Meet in the upper parking lot in front of the park office in Ridley Creek State Park Directions: from Route 352, go North on Gradyville Road for 1 mile; turn onto South Sandy Flash Road ( Park Entrance) and make a right onto the first road. Proceed to the upper parking lot. Address: ( address is for the house across the street from the main park entrance) 351 Gradyville Road, Newtown Square, PA 19073.. Bring water and snacks.