Know Before You Go
There are several ways to reach the abandoned wonderland. The easiest is parking at San Elijo Road. There is ample parking in front of the vacant industrial property. Once parked, follow alongside the compounds high concrete walls toward the back of the complex. Getting warmer... there is a trail head sign that leads explorers to the falls and mine trail.
The trail is well maintained and open from sunrise to sunset. Keep your eyes and ears open as this is also a popular mountain biking spot and the trail can become quite narrow in spots.