EntityQ4979687· pop 5· linked from 113 articlesBrush MountainSign in to savemountain in Blair County, Pennsylvania, United StatesConnectionsRidge-and-Valley AppalachiansEntityBlue KnobEntityPennsylvaniaEntityTennesseeEntitygeographic coordinate systemEntitymountain rangeEntityAppalachian MountainsEntityPaleozoicEntitysandstoneEntityPermianEntitySilurianEntityOrdovicianEntitystratigraphyEntitysummitEntitysailplaneEntityfoldEntityridgeEntityquartziteEntityUnited States Geological SurveyEntityCambria CountyEntityCategoriesAllegheny MountainsRidges of Blair County, PennsylvaniaRidges of Pennsylvania