The first extended chain of hills of importance above tidewater, northwest of the coastal plain area, stretching entirely across the county from the river Delaware to the Montgomery line and passing through the lower part of Lower Makefield, Middletown and Northampton Townships and the central part of old Southampton Township. The rocks of this ridge are of metamorphic formation of considerable economic importance, producing a well-known micaceous building stone, and a flat schist, also for building purposes, but chiefly for flagging, being known locally as "milkhouse stone." Quarries have been opened in this ridge at Rocksville, Trevose, Langhorne, Neshaminy Falls and Morrisville. At Morrisville the formation dips under the Delaware River. The ridge's highest elevation is 200 feet at Langhorne. Edge Hill is also the name of a former hamlet on this ridge in the extreme southwest corner of Lower Makefield.
Ferry Road East • Greenway Avenue • Overton Avenue • Pennsylvania Avenue North • Ridge Avenue • Stafford Place • Tower Circle