Great Unknown of the Rio Grande: Terlingua Creek to La Linda, including Boquillas Canyon and Mariscal Canyon

This guidebook for canoeing, kayaking or rafting the Rio Grande covers three sections of the river in Big Bend National Park in Texas: the Great Unknown, Mariscal Canyon and Boquillas Canyon. This region bordering the Rio Grande was a center for mining, ranching and farming from the end of the Indian Wars in the late 19th century until the establishment of the national park in the early 1940's.