EntityQ7567987· pop 6· linked from 279 articlesSouth MountainSign in to savenorthern extension of the Blue Ridge Mountains range in Maryland and Pennsylvania, United StatesConnectionsWashington Monument State ParkEntityUnited StatesCountryPennsylvaniaEntityVirginiaEntityMarylandEntitygeographic coordinate systemEntityAmerican Civil WarConceptInternational Standard Book NumberEntitymountain rangeEntitysea levelEntityRobert E. LeeEntityPotomac RiverEntitysummitEntityorogenyEntityGettysburgEntityUnited States Geological SurveyEntityYork CountyEntityBlue Ridge MountainsEntityChambersburgEntityMason–Dixon LineEntityCategoriesBlue Ridge MountainsLandforms of Cumberland County, PennsylvaniaLandforms of Franklin County, PennsylvaniaLandforms of Frederick County, MarylandLandforms of Washington County, MarylandMountain ranges of MarylandMountain ranges of PennsylvaniaMountains on the Appalachian TrailSouth Mountain Range (Maryland−Pennsylvania)Subranges of the Appalachian Mountains