Monahans Sandhills State Park (about 4 hours away) might be interesting:
Area Attractions: Points of interest nearby include Balmorhea State Park; Million Barrel Museum in Monahans; the Odessa Meteor Crater, a national, natural landmark; and the Cities of Midland and Odessa. There is also a replica of Stonehenge at the UT Permian Basin Campus in Odessa.
http://www.tpwd.state.tx.us/spdest/f...ans_sandhills/ Dinosaur Valley State Park (about 1.5 hours away):
Area Attractions: Nearby attractions include Meridian and Cleburne State Parks; Acton State Historic Site (the state's smallest state park); Somervell County Museum; Somervell County Expo Center and Amphitheater, Comanche Peak Visitor's Center, Squaw Creek Reservoir, and the Fossil Rim Wildlife Park. For more information on the Glen Rose area visit
www.glenrosetexas.net http://www.tpwd.state.tx.us/spdest/f...nosaur_valley/