One of the first placer mines to use hydraulic mining techniques, these 1860s diggings are now the centerpiece of a 4.9-acre park where visitors can practice gold panning, hydraulic mining, and ore processing. The complex includes the old assay office from Tiger, spared that ghost town's 1972 burning by the U.S. Forest Service to discourage squatters. The Summit Historical Society moved the assay shack from the Tiger townsite, 4.6 miles east of Colorado 9 on the Swan River, to house an extensive mineral collection and equipment used to demonstrate assay techniques. Another refugee relocated here, the Giger Barn, originally stood on French Street. It is a classic carriage barn with folding doors and a separate door for the horse. The 8-by-10-foot bachelor miner's log cabin with its single window came from Ridge Street. Other exhibits range from a giant nozzle used to wash away hillsides to a sluice and flume that deliver mud and sludge laced with “free” gold to fascinate tourists.