In 2002, the Lehigh Gap Nature Center purchased over 750 acres of property along the Kittatinny Ridge, including land along the Lehigh River and part of Lehigh Gap.
It began erosion stabilization and revegetation of the property with native, warm season grasses in 2003. In the same year, the Lehigh Gap Wildlife Refuge officially opened to the public.
Today, native grasses and tree saplings cover Blue Mountain, as about 2,800 acres are revegetated thus far.
The refuge has an extensive trail system available for hikers, bikers and outdoors enthusiasts.