Mexico, Chihuahua, El Sueco 1:50,000 Cetenal topographic quadrangle; 13R 03 66870mE 33 16 450mN (NAD 27 CONUS) north of Chihuahua City, east base of Sierra El Chica.
29.909349 -106.398695 +-2000m.
UTM: 331645031645013R
1570 meters (5150ft)
Larrea tridentata scrub. Upper bajada of red brown volcanic clay and gravel.