Backbone Rock Campground is open for the 2021 season. Backbone Rock Campground is a small campground situated along the beautiful Beaverdam Creek at an elevation of 2,100 feet in northern Johnson County. This developed campground is popular with those visiting the nearby Backbone Rock, a tunnel originally blasted through the rock ridge for the railway. The creek side location with popular swim area and lush forest surroundings make Backbone Rock Campground particularly desirable during hot summer months. With 10 campsites and an adjacent large Civilian Conservation Corps- built reservable pavilion with lawn, Backbone Rock is a great option for a group to reserve the whole campground for retreats and other events.