The American West once had hundreds of precious metal mills. Now, most are in various stages of ruin. One important exception is the Mayflower Mill, (or the Shenandoah-Dives Mill) located two miles northeast of Silverton. A National Historic Landmark, this wonderful piece of mining history is open to the public. Witness first hand how the miners were able to extract gold, silver and base metals from the hard rock ores in this complete processing mill. The San Juan Mountains of Southern Colorado were one of the last ranges to be prospected. Although some prospectors were still looking for placer gold, it was becoming quite evident that if any wealth was to be made in the San Juans, it was going to be in underground lode mining.