A sidewinder rattler traverses the dunes of El Pinacate.
(image 1 of 9)Rancho Los Fresnos is a 10,000-acre project of Naturalia and The Nature Conservancy.
(image 4 of 9)Valer Austin in the restored grassland of one of the Cuenca los Ojos ranches.
(image 5 of 9)Cascada de Basaseachic, Mexico's second-tallest waterfall, is among many dramatic features of the Copper Canyon region.
(image 8 of 9)A Mexican gray wolf, one of five released last October in Mexico’s Sierra San Luis. Within a few weeks, all but one had been killed with poison.
(image 9 of 9)