|Trailhead||contagion +silverado,+ca&aq=&sll=33.757564,-117.699709&sspn=0.019695,0.038624&vpsrc=0&ie=UTF8&hq=&hnear=Jeffrey+Rd+%26+Limestone+Cyn+Rd,+Silverado,+California+92676&t=h&z=16″>Augustine Staging Area
Silverado, CA 92676
Once a month, OC Parks and the Irvine Ranch Land Conservancy open Limestone Canyon Wilderness Park up for a Wilderness Access Day. Most of the time, Limestone Canyon is only open for limited guided tours, which anyone can sign up for through the Irvine Ranch Natural Landmarks Activities page. However, during the Wilderness Access Day, you’ll have free reign around any of the trails in Limestone Canyon.
The main draw of Limestone Canyon is a geological feature called The Sinks. The Sinks is a large canyon carved into the soft limestone hills that has been called The Grand Canyon of Orange County. Unfortunately, people are not allowed to climb down into The Sinks, but are only allowed to look at it from above due to their delicate nature.
The hike out to the sinks starts from the Augustine Staging Area, located just off Santiago Canyon Road north of Silverado Canyon Road on the west side of the road. During Wilderness Access Days, there will be public parking and check-in located at the Augustine Staging Area. There are normally a few hundred people who visit Limestone Canyon on these days, so expect a much larger production that you would normally find at a regional park.
The trailhead is at the southeast corner of the parking area from which a fire road heads south. The entire length of the trail is actually this fire road that circumnavigates the park. On the one hand, this is nice because it means the trail is wide and easy to navigate but it also feels less intimate with the surrounding nature. Also, the first mile or so of this fire road is covered with gravel which is somewhat uncomfortable to walk on, especially on the way back to the trailhead. Continue reading Limestone Canyon Wilderness Park – The Sinks