EntityQ6116842· pop 5· linked from 120 articlesJacks MountainSign in to savemountain in Pennsylvania, United StatesConnectionsUnited StatesCountryPennsylvaniaEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityfossilEntitymountain rangeEntityAppalachian MountainsEntitySilurianEntityOrdovicianEntitystratigraphyEntitysummitEntityBrachiopodaEntityridgeEntityUnited States Geological SurveyEntitytopographic mapEntityMifflin CountyEntitySnyder CountyEntityanticlineEntityUnion CountyEntityHuntingdon CountyEntityCategoriesLandforms of Mifflin County, PennsylvaniaLandforms of Snyder County, PennsylvaniaLandforms of Union County, PennsylvaniaRidges of Huntingdon County, PennsylvaniaRidges of PennsylvaniaWater gaps of Pennsylvania