Robbers Roost Canyon and Spring some 30 miles west of the park was the hangout of a horsethief named Cap Brown in the seventies. From 1884 until about 1900 it was the hiding place for the notorious Butch Cassidy and his Wild Bunch, who robbed banks, trains, and mine payrolls and stole or traded horses and cattle from the ranchers. Cassidy and his gang managed to get along with the cattlemen by either replacing or paying for most of the horses and cattle, but the law finally drove them out, and Butch, the Sundance Kid, and a woman named Etta Place moved to Bolivia. According to the movie version, Butch and the Sundance Kid were hunted down and shot by Bolivian soldiers for robbing banks and mine payrolls, but according to Baker (1971) Butch returned safely to the United States and died in the Northwest in 1943 or 1944, and the Sundance Kid is reported to have died in Casper, Wyo., in 1958 at age 98. Art Ekker (Findley, 1971, fig. 3), present owner of Robbers Roost Ranch, which contains the former hangout, commented: “A lot of people are sure that Butch and his gang buried some money around Robbers Roost. Every so often somebody turns up with a map or a metal detector and wants to start digging. They’ve found a lot of rusty tin cans and old horseshoes.” [Illustration: CAVE SPRING LINE CAMP. Above, line-camp exterior, showing entrance and corral; below, interior, showing furnishings and staple food items kept in stock. Served as regular cowboy line camp for many years, then as part of temporary park headquarters; later restored as part of Cave Spring Environmental Trail. A nearby cave, also in Cedar Mesa Sandstone, contains a spring. (Fig. 6)] [Illustration: Fig. 6, lower image] The uranium boom of the 1950’s, touched off by Charlie Steen’s fabulous Mi Vida mine south of La Sal, Utah, temporarily skyrocketed the population of Moab and sent uranium hunters into every nook and cranny of the canyon lands. Many of the jeep trails were first made then, and landing strips and prospect holes of that period are plentiful. Most of the prospects were in the Chinle Formation, particularly in the Moss Back Member at the base, but some were in rocks older than the Chinle, and some were in younger rocks. The uranium mines in the park are no longer operating, but production has been resumed in a few mines just north and east of the park. Information on some of these mines, obtained from E. P. Beroni (U.S. Atomic Energy Comm., oral commun., Feb. 14, 1973) is given at appropriate places below. The number of boaters or floaters on the Colorado and Green Rivers is increasing steadily, and trips by jet boat and other power boats are available from Moab. Tourist travel over good roads on Island in the Sky and Hatch Point and by paved road to The Needles also is increasing steadily. Travel west of the Green River and main stem of the Colorado River is still restricted largely to a few jeep trails and to hiking or horseback riding.