It ranges from the Texas-New Mexico border south for 16 miles to Crazy Kat Mountain. Until recently, Knapp owned 23 acres just south of Scenic Drive, surrounding Scenic Drive and stretching down to Murchison. He sold at least part of that land to SJT LP, a local concern. Today the Wilderness Coalition is alive and kicking, although its members are more worried about protecting what they have than expanding where they aren't. Adding to the land is not an easy process, since any change in park boundaries requires an act of the legislature.
Legislation already exists that allows the range to become part of the park.
But that's not the obstacle. Unexploded ordnance is. Once used as an artillery range by the military, Castner Range would need to be swept free of ordnance to a depth of three feet before it could opened to the public. Cost estimates for the work run into the millions. Sproul says the Coalition is also interested in two parcels already surrounded by parkland.