Not long after gold was discovered in large quantities in the Klondike, dredges were brought into the Yukon—the first dredge was built in the fall of 1899. One of the two dozen dredges that worked this area, Dredge No. 4 was designed by the Marion Steam Shovel Company. The dredge rests on Claim No. 17 below Discovery on Bonanza Creek, near the spot where it ceased operations in 1960. Dredge No. 4 is the largest wooden hull, bucket-line dredge in North America and is a significant example of corporate industrial mining in Canada. Guided tours of Dredge No. 4 National Historic Site are provided by licensed private operators. You can also learn about the dredge using the site guide, the Explora app, or the Xplorer kid's booklet. See if you can find the three Geocaches in the Klondike Goldfields. For more information, call 867-993-7200, www.parkscanada.gc.ca/klondike. Bonjour!