Hall City Cave Trail Professional Review and Guide
"This short loop passes the trailhead to Hall City Cave. The cave, set beneath a limestone cap, is reached by the easy graded dirt road and then a 0.3-mile hike. The trail starts in the small community of Wildwood, a couple miles north of California 36. The cave is well marked as far as the final turnoff; then all markers disappear. Take the side trail and proceed to a parking area for cave visitors. A vehicle trail continues past the parking area, but it is blocked by a closure gate. The hiking trail leads out the back of the informal parking area, runs alongside Hall City Creek for a short distance, then crosses over the creek and switchbacks up the hill to the cave. If, after crossing the creek, you find yourself continuing along the creek instead of climbing up the hill, you have overshot the switchbacks. Special Attractions: Hall City Cave; Harrison Gulch mining ruins close to the trail. High-clearance 4WDs are preferred, but any high-clearance vehicle is acceptable. Expect a rough road surface; mud and sand are possible but will be easily passable. You may encounter rocks up to 6 inches in diameter, a loose road surface, and shelf roads, though these will be wide enough for passing or will have adequate pull-offs."