Old Tower, New Home

Hiking to Castro Peak Lookout in Henninger Flats

Where do old fire lookout towers go after they retire? This one moved from Malibu to the San Gabriel Mountains. That’s right: The old Castro Peak Lookout, which stood at 2,826 feet in the Santa Monica Mountains and saw service from 1925 to 1971, now stands above Henninger Flats in the San Gabes, at 2,600 feet.

Henninger Flats is also home to a pack-in, pack-out campground and a charming nature center with history of its own. Its crown, the 20-foot steel relic, can be viewed via a 5.6-mile gut-bustin’, heart-thumpin’ out-and-back workout that delivers panoramic vistas of the San Gabriel Valley.

From the Mount Wilson Toll Road Gate, head down into the canyon, crossing a bridge and ignoring a descent at the junction (it leads to Eaton Canyon). Instead, start your uphill slog for 1,400 feet of thigh-burning gain. The vistas are unobstructed and glorious all the way, but the trail offers little shade, save for the surprise pine or two among yucca, Indian paintbrush, and laurel sumac. Bring lots of water, because although Henninger may have a campground, it has no water supply.

Benches break up your ascent, and it is well worthwhile to stop on a clear day and gaze at the downtown skyline and beyond. When you reach the welcoming sight of the Henninger Flats sign, the trail deposits you into an even more welcoming grove of pines towering above the campsites.

The Castro Peak Lookout stands ahead, an erstwhile fire finder sidelined to a peaceful corner under the pines. Though relieved of duty by the modernity of flying machines, its antique aesthetic lives on, prime for photography or a passing thought about our long history of dealing with California forests’ greatest natural threat.

Check out the nature center next door, full of local artifacts, taxidermy, maps, a giant tree-ring exhibit, and even an old but functioning soda machine. Enjoy a final sprawling look across the flats, and prepare your knees for the journey back to your car.

To get to the Pinecrest/Mount Wilson Toll Road trailhead, take the I-210 to Pasadena to the Allen Ave. exit (coming from the east), or the Hill exit—staying along Corson St. to Allen Ave. (coming from the west). Then head north on Allen. After 2.5 miles, turn right onto Mendocino Ln., which turns into Crescent Dr. after crossing Altadena Dr. Take your first left onto Pinecrest Dr., followed by a right onto Bowring Dr. Park on Bowring Dr. for free street parking and walk east on Pinecrest to find the Mount Wilson Fire Rd. gate. Dog-friendly!

Trending Stories NorCal

View all Stories
  1. All right, Almaden!

    Take a trip through time on this 5-mile loop in Almaden Quicksilver County Park. Explore the ruins of an old cinnabar mine and enjoy the first hints of wildflower season.

    View
  2. Waterfalls and Wine Pours

    Cooler temps, green hills, and the return of our magnificent waterfalls! This family-friendly 2-mile hike at Uvas Canyon County Park in Morgan Hill is a great way to get the most out of a short hike post-rain.

    View
  3. Woman hiker is climbing up the ladder in the Steep Ravine section of the Dipsea Loop Trail on Mount Tam

    Misty on Mount Tam

    Mount Tam’s 3.9-mile round-trip Steep Ravine and Dipsea Trail Loop weathers the wets and wilds with some confidence, sheltered in parts by redwoods, and wowing with a waterfall.

    View
  4. Mile-Long Cataract Club

    In winter after heavy rains, the north flank of Mount Tam glows with flows. The nearly mile-long series of waterfalls—Cataract Falls—transforms into a supercharged spectacle. Starting at Alpine Dam, a 1.6 mile (one-way) narrow trails threads through redwoods and ferns along Cataract Creek.

    View

Trending Stories SoCal

View all Stories
  1. Peace Labyrinth

    Hidden in LA’s historic West Adams district, the Peace Awareness Labyrinth & Gardens is a welcome respite from the norms of urban noise.

    View
  2. Weekend Sherpa Podcast: Take It Outside

    Adventure for your earbuds. What's new in the world of the outdoors? Listen to Weekend Sherpa co-founders discuss local hikes, beaches, bike rides, camping spots and all kinds of travel and adventure in California and beyond!

    View
  3. Hikers sitting on a large rock slab next to Three Sisters Falls in Cleveland National Forest Southern California near Julian

    Three Sisters

    Good things come in threes at this hike to a lovely trio-tiered waterfall in Cleveland National Forest. The 4.25-mile out-and-back hike rambles among rolling hills, with rocky mountain views as switchbacks take you down to a lush canyon and the falls.

    View
  4. People gathered around a tree at an LA Park as part of the Tree Tour led by Stephanie Carrie

    LA's Tree Tour

    Los Angeles is famous for its iconic palm trees but did you know that LA is home to one of the most diverse urban forests in the world? With over 1,000 different tree species lining its streets, LA offers a unique urban canopy waiting to be explored. One of the best ways to discover it is by joining a Tree Tour

    View