Allen's Diamond Four Ranch, the highest-altitude dude ranch in Wyoming, arranges mountain horse-pack trips, big-game hunts, and guided fishing and other horseback excursions. Some trips originate at the ranch, where you stay in cabins and take day rides; others are overnight backcountry adventures. Children must be seven or eight years old to go on extended pack trips. Also available are drop-camp services. No pets are allowed. Call or check the Web site for directions. Off U.S. 287, 35 mi northwest of Lander, Lander, WY, 82520. 307/332–2995 or 307/349–6784. www.diamond4ranch.com.