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)
Pennsylvania, the Keystone State, is well-known for its beautiful scenery. From the piedmont and. coastal plains in the southeast corner of the state, to the peaks of the Allegheny Mountains running. diagonally through the middle, to the lowland shores of Lake Erie, Pennsylvaniaâs diverse geography is. home to thousands of different plant, animal, and invertebrate species.