LAJITAS MESA. Lajitas Mesa is a mile north of Lajitas and just east of the Presidio county line in southwestern Brewster County (at 29°18' N, 103°47' W). The mesa, at an elevation of 3,672 feet above sea level, rises some 1,330 feet above the town. Lajitas Mesa is 1½ miles long and a half mile across at its widest point. On its flanks are exposed dark lava flows and white ash deposits. Soils on the mesa are shallow and stony and support Mexican buckeye, walnut, persimmon, desert willow, scrub brush, and grasses.