The granary and tack shed were built as part of Camp Santa Helena for the cavalry horses. A stable, large enough for 60 horses, and a corral were also constructed. The barn burned down on April 9, 1935. Horses were an important tool and companion for cavalrymen. The ideal mount was steady in battle and able to safely carry cavalry troopers over harsh desert terrain. Horses and mules are still utilized by Big Bend staff today for law enforcement purposes, trail building, and search and rescue missions.