The caves are located on the north side of Fell creek and more easily accessed in the summer time. The Crystal caves are the remains of an old mining prospect, crystal quartz cover part of the rock wall on the exterior of the caves. Make sure to bring a flashlight along, as the caves can be pretty dark, but relatively safe to check out. The cave is laid out in a ‘L’ shape extending to about 25m into the mountain side to a dead end.
As you look up the mountain, you should see a trail that goes pretty much straight up to the right, From the sign at the parking lot the trail starts across the road a bit towards the bridge. A little bit of self-orientation is needed to travel across the slope to bypass a fenced area by the water reservoir. After about 300m or 400m there will be a steep goat trail leading down to Fell creek. Cross over and follow the path uphill along the south bank of the creek.
This hiking trail will take you through some steep terrain as well as a series of peaceful waterfalls. About 500m after the first crossing, there will be a flat area in the creek with the remains of crushed white quartz and a rock slide across the creek, that when you cross over to the south bank and proceed along the smaller path that follows the creek. Within about 100 to 150m, the trail become somewhat unclear and harder to travel and the caves are about 10m ahead on the left. Added a spoiler picture of the cache location