Central Colorado 4Wheeling Author:Wayne W. Griffin The system of mining and supply roads left behind in central Colorado after the mining boom of the late 1800s accesses abandoned mines and mining towns, high mountain passes, treacherous river canyons, and scenic alpine valleys. This guide contains ratings, maps, and detailed descriptions of the 24 best and most popular 4-wheel routes over these... more » roads in the mountains near Aspen, Leadville, Crested Butte, Marble, and other former Colorado mining towns. Included also are backcountry 4-wheeling ethics, rules of the road, tips on 4-wheel driving, and emergency phone numbers and addresses.« less