Twenty two counties cover 35,000 square miles and comprise an ecological transition zone at the junction of the Plains to the north, Edwards Plateau in the east, Chihuahuan Desert in the west, and the Brush Country in the south. Explore Native American rock art, cowboys and ranching, military forts, Hispanic culture, the Permian Basin Oil Boom of the 20th century, World War II training bases and artifacts, museums, county court houses, and a variety of unique and spectacular natural wonders and outdoor recreation.