Van Horn folio, Texas

The Van Horn quadrangle is situated in EL Paso and Culberson counties, Tex., about 100 miles southeast of El Paso.  It is bounded by parallels 31° and 31° 30' and meridians 104° 30' and 105° and incluedes 1019 square miles.  This area lies within the Cordilleran region, about midway between Peco River and teh Rio Grande, and forms a part of what is known as trans-Pecos Texas.