stone art or cairn by a trail

america american americana appalachain appalachains appalachian architecture area art balance bedford cairn cairns campbell concrete counties county dam electric electrical electricity energy families family generate generators hike hiker hiking horizontal hydro impoundment level marker megawatt megawatts mountain mountains mountian mountians panorama path paved peddles pittsylvania power project recreation reservoir river riverscape roanoke rock rocks sandy scene scenery scenic smith stack stacking states stone stones trail travel united usa vertical view virginia vista walk walker walking water