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)
Gateway to the Blue Ridge Mountains. From extreme south-central Pennsylvania the Blue Ridge Mountains run to the south and west, including land that ranges from high peaks (such as the Shenandoahs) to rolling hills like those throughout much of the southwest portion of Virginia.