A former hydraulic gold mine a few miles from Weaverville, one of the largest and most productive of its kind in California. Hydraulic mining involved directing high-pressure water jets at hillsides to wash gold-bearing gravel into sluices — a technique that was spectacularly effective at extracting gold and equally spectacular at destroying landscapes. The La Grange Mine operated from the 1850s into the early 20th century, and the eroded hillsides and debris piles left behind are still visible today, offering a vivid picture of the environmental cost of Gold Rush–era extraction. The site itself is undeveloped and accessible via unpaved roads; combined with the Jake Jackson Museum's mining exhibit, it completes the picture of what this industry actually looked like on the ground.