Member Login. The following was included in TCTA's 2015-16 Survival Guide, the ultimate reference tool for Texas educators, and is current as of September 2015 but is subject to change.
The Allegheny Mountains run diagonally from the southwest to the northeast with piedmont and coastal plains in the southeast triangle. The Allegheny Front, as it's called, cuts a diagonal line across the state. In the northwest, the plateau falls to the Lake Erie lowlands and, finally, Lake Erie. ( Pennsylvania Close-up)
What Are the Five Land Regions of Pennsylvania? Pennsylvania stretches from the Delaware Estuary north and westward for more than 280 miles through five land regions. Pennsylvaniaâs plains, mountains, ancient volcanic hills and plateaus set the stage for historic events.