STUDY BUTTE. Study Butte is five miles east of Terlingua in southwestern Brewster County (at 29°19' N, 103°32' W). It has an elevation of 2,830 feet above sea level and rises 230 feet above the junction of State Highway 118 and Farm Road 170, three-quarters of a mile northwest. The butte is named for a local doctor, Will Study (pronounced "stoody"), who around 1901 developed the Big Bend Quicksilver Mine at the eastern foot of the butte. The local shallow stony soils support scrub brush and grasses.