Just outside of Los Angeles, in the Santa Susana Mountains, is a park called Rocky Peak. Exactly as it sounds, this large wild, natural area is full of sandstone rocks and boulders that cover rolling hills and peaks that overlook the city. Rocky Peak Park has trails that are popular for hiking, dog walking, and horseback riding. One of these hikes, Hummingbird Trail, leads to a hidden cave in Simi Valley, California, that only the intrepid discover.

It requires determination, a trail map, good hiking shoes, and some rock scrambling to reach the hidden cave known by hikers as the “Secret Swing” cave. From a distance, you would not think much of it, but if you look closely, you can make out the ladder that leads to it.
Jerry Fehlman / AllTrails
This is not an easy hike but for those up to the challenge, the otherworldly rock formations, wind caves, and panoramic views along the way are worth the effort.
Xplor Fitness / Google Reviews
The secret cave has been outfitted with hanging benches, swings, and hammocks in several places, facing this direction may seem pointless and random, but wait until you see the view. These have been placed carefully to take it all in.
Arash Aghassi / Google Reviews
The cave walls are covered in colorful graffiti. It is sad to see a real natural wonder covered in paint, but there is something interesting about the combination, something urban but not. Like being under a concrete overpass in the middle of a big city, but also on another planet with these strange natural shapes hidden in a mountain.
The cave is perched up high and opens up to stunning views of the valley below and the surrounding area.
Jack Carvalho / Google Reviews

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The trail that leads up through the boulder-covered hills is not for the inexperienced or the faint of heart. Most of the trail involves an incline, is very steep in places, and can be slippery due to mud, loose dirt, and wet or weathered rock surfaces.
Jonathan P. / Google Reviews
It can also get hot and there is not much shade, so make sure you have plenty of water with you.
When there has been a good rainy season, hikers will encounter beautiful streams, waterfalls, and rock pools on the trail.
Rex Frankel / Google Reviews
Sravan Kumar / Google Reviews
I can only imagine the feeling of swinging out from the opening of this hilltop cave with these epic views!
Xplor Fitness / Google Reviews

This hidden cave in Simi Valley is thrilling for those who conquer the Hummingbird Trail loop. Have you hiked in Rocky Peak Park, perhaps even getting to swing in the cave? Share your thoughts and experiences with us in the comments! For a slightly less strenuous, but equally beautiful, hike in the area, consider Coyote Park, Long Canyon. If you love hiking, be sure to check out our Ultimate Hiking Packing List.

Check out more of our favorite outdoor activities and nature adventures in Southern California.

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Hummingbird Trail, Simi Valley, CA 93063, USA