Follow I-270 North and take the RT80 West exit towards Buckeystown.  In ~5 miles turn left on RT85.  In ~0.6 miles turn right on Adamstown Road.  In ~1.8 miles turn right on Mountville Road.  Follow Mountville Road for ~3.8 miles. The slope entrance (a gate in the fence) will be on the left just past the crest of the hill.  Parking is extremely limited along the “gate/hill” side of the road.