These are multi-use trails. Lots of single- & double-track, you will encounter some hikers and horses, but very few bikers. Most of the trails seem to be built for horseback so you will find many challenges, but overall, most of this trail system is very rideable. Beautiful Hill Country scenery in a pristine setting. The 5369.8-acre site was acquired by gift and purchase in 1976 and was opened to the public in 1984. The bulk of the site was a donation from the Merrick Bar-O-Ranch with the stipulation that it "be kept far removed and untouched by modern civilization, where everything is preserved intact, yet put to a useful purpose."