We just learned about the Central Appalachian Mountains.
Another part of that mountain chain is the Southern Appalachian Mountains.
These mountains go through New York, Pennsylvania, Ohio, West Virginia, Kentucky, Tennessee and Alabama.
This includes the Catskill Mountains, Poconos, Allegheny Plateau and the Cumberland Plateau.
(from: wikipedia - laurentian mountains)
Kid Facts - Blast from the past: K2