Category Archives: pt mugu state park

Old Boney to Serrano Valley, Plus Fireline and Overlook

Paintbrush along the Old Boney Trail in Pt. Mugu State Park

Serrano Valley and Canyon had been on my run list for a few weeks. I was curious to see how December’s rainfall had affected Serrano Canyon. Runoff from those storms had (once again) washed out sections pf the Blue Canyon Trail and Upper Sycamore Trail. Had the Serrano Canyon Trail also been damaged?

Greenbark Ceanothus along the Old Boney Trail
Greenbark Ceanothus along the Old Boney Trail

It was a good day to visit Serrano — I was looking to do a longer run; the weather was perfect; the meadows green; and many wildflowers were in bloom.

There are a couple of ways I like to run to Serrano Valley from the Wendy Drive Trailhead. Both do the initial 1.6 mile, 900′ climb up the Old Boney Trail from Danielson Road. At the top of the climb, one route goes up and over Boney Mountain’s western ridge to the Backbone Trail, and the other continues on the Old Boney Trail. Both routes join at the Chamberlain junction of the Backbone and Old Boney Trails. I’d done the western ridge of Boney Mountain recently, so opted for the Old Boney route.

Prickly phlox along Overlook Fire Road
Prickly phlox along Overlook Fire Road

Wildflowers were everywhere. The December rain and February heat wave seems to have encouraged many plants to bloom — among them blue dics, Encelia, clematis, California poppy, greenbark Ceanothus, shooting star, nightshade, paintbrush, poison oak, milkmaids, prickly phlox, hummingbird sage, and larkspur.

Serrano Valley was Spring-green and spectacular. Serrano Creek was gurgling away, and the Serrano Canyon Trail had survived December’s storms. After a pleasant run down Serrano Canyon, I stopped to get some water from the faucet at the junction of the Serrano Canyon Trail and Sycamore Canyon.

A right turn here — up Sycamore Canyon — produces a run of about 20 miles. Today I was looking to do a little more than that, so turned south and ran about a quarter-mile down Sycamore Canyon and picked up the Fireline Trail. This trail gains about 700′ in elevation on its way up to Overlook Fire Road.

California poppies along Overlook Fire Road, above La Jolla Valley
La Jolla Valley from Overlook Fire Road

Overlook Fire Road leads northwest to the top of the Ray Miller Trail. I was feeling good and briefly debated descending to the Ray Miller Trailhead. I did a quick estimate of the mileage. I was at about mile 14. Descending Ray Miller would add about 2.5 miles, and then the run back from the trailhead to Wendy would add another 12 miles. Hmmmm… nearly 29 miles. My legs were way ahead of my brain, and were already continuing up Overlook Fire Road.

I followed the usual route back — Overlook -> Hell Hill -> Wood Canyon -> Two Foxes -> Sycamore Canyon -> Upper Sycamore -> Danielson Road -> Satwiwa. The paved part of Sycamore can be a bit tedious and it helped when I happened upon a couple of friends.

Here is an interactive, 3D terrain view of the GPS track of my route. The map can be zoomed, tilted, rotated, and panned. For help controlling the view, click/tap the “?” icon in the upper right corner of the screen. Track and placename locations are approximate and subject to errors. Poor weather, and other conditions may make this route unsuitable for this activity.

Some related posts: Over Boney Mountain to Sandstone Peak and Serrano Valley, Serrano Valley from Wendy Drive, Pt. Mugu State Park Debris Flows and Flash Floods

Out and Back Trail Run to the Ray Miller Trailhead from Wendy Drive

Hikers enjoy the spectacular scenery of California's Point Mugu State Park

When I parked at the Wendy Drive trailhead, there was just enough light to see a wide band of high clouds overhead. That was good news. With a well-advertised storm expected to move through the area the next day, I hadn’t been sure what weather to expect for today’s run.

Colorfully illuminated clouds a few minutes before sunrise on the Wendy Connector Trail
Colorfully illuminated clouds a few minutes before sunrise on the Wendy Connector Trail

The general forecast was for low clouds and fog in the morning, giving way to partly cloudy skies in the afternoon. I was going to be running one of the more scenic trails in the Santa Monica Mountains — the Ray Miller Trail. High clouds and sunshine were a much better option than running in the fog or with gloomy, overcast skies.

Shortly after leaving the trailhead, the band of high clouds became underlit by the reds, oranges and yellows of the rising sun. It was going to be a good run.

The route-finding on this run is relatively straightforward. From the Wendy Drive trailhead on Potrero Road, run over to the Satwiwa Native American Indian Culture Center (see Satwiwa map). From the Culture Center run 4+ miles on Big Sycamore Canyon Road/Trail toward the beach. Some of this is paved.

La Jolla Canyon, PCH and Mugu Peak from the Ray Miller Trail
La Jolla Canyon, PCH and Mugu Peak from the Ray Miller Trail

Once past the junction of Sycamore Canyon and Wood Canyon fire roads, take either the Wood Canyon Vista Trail (Backbone Trail) or Fireline Trail up to the Overlook fire road. From the top of the Wood Canyon Vista Trail turn left on Overlook fire road, or from the top of Fireline turn right, and follow the road to the top of the Ray Miller Trail. The Fireline option is about 0.4 miles longer. Here’s a map from the State Park website. Note that the La Jolla Canyon Trail is closed.

The Ray Miller Trail drops about 1000′ over 2.6 scenic miles. There is usually water available at the parking lot at the trailhead. Today the conditions were about as good as they get. The trail was in excellent condition. The temperature was in the mid-70s. The marine layer was holding offshore and a few puffy clouds had formed over the higher peaks.

One of the things about the Ray Miller Trail is that run/hike up it is almost as enjoyable as the run down. It is a very popular, and there are almost always runners and hikers on the trail. Running up a section of trail, I thought I recognized someone going down. It was nine-time Badwater finisher Chris Frost. We talked for a while about trails, running and races.

Fall color on a California sycamore along Wood Canyon Fire Road
Fall color on a California sycamore along Wood Canyon Fire Road

From Overlook Fire road the route back to Wendy was a familiar one — Hell Hill, Wood Canyon Fire Road, Two Foxes Trail, Big Sycamore Canyon Road, Upper Sycamore Canyon Trail, Danielson Road, and the Satwiwa Loop Trail. Including a short jog over to PCH the run was a little over 24 miles with about 3100′ of elevation gain.

Here’s an interactive, 3D terrain view of the Wendy Drive – Ray Miller Out & Back trail run. The map can be zoomed, tilted, rotated, and panned. For help controlling the view, click/tap the “?” icon in the upper right corner of the screen. Track and placename locations are approximate and subject to errors. Poor weather, and other conditions may make this route unsuitable for this activity.

Some related posts: A Windy Run, Walk, Ride, for Wildlife Research; Running to Ray Miller; Ray Miller Training Run

Not So Busy Sandstone Peak

Boney Mountain area peaks from the top of Sandstone Peak.
Boney Mountain area peaks from the top of Sandstone Peak.

With the closure of Los Padres, Angeles, San Bernardino, and Cleveland National Forests until Thursday, I did not expect to find the summit of the highest peak in the Santa Monica Mountains empty. Even if it was by happenstance, I’ve rarely found the summit of Sandstone unoccupied on a Saturday or Sunday morning.

Like last weekend’s run, this morning’s trail run started at the Wendy Drive Trailhead on Potrero Road in Newbury Park. But today’s route had a lot more elevation gain, and some steep scrambling up the rocks of Boney Mountain’s Western Ridge. It’s an adventurous way to do Boney Mountain, Tri Peaks, and Sandstone Peak, and get in some excellent running on a very scenic stretch of the Backbone Trail.

Overall, the route was in the best shape I’ve seen since the 2018 Woolsey Fire. The path that works up the north side of Tri Peaks and around the east side of its summit blocks was relatively clear. Following trailwork by the Santa Monica Mountains Trails Council, the Chamberlain Trail segment of the Backbone Trail was once again an enjoyable downhill run.

Here’s an interactive, 3D terrain view of a GPS trace of my usual route (yellow) to Sandstone Peak from Wendy Drive via Boney Mountain’s Western Ridge, and return via Big Sycamore Canyon. A GPS track of the Cabin trail is also shown. Variations of the route include doing the Mishe Mokwa loop after climbing Sandstone Peak; and returning to Sycamore Canyon via Serrano Valley/Canyon instead of Blue Canyon.

Some related posts: Sandstone Peak from Wendy Drive, Over Boney Mountain to Sandstone Peak and Serrano Valley, An End of Year Boney Mountain Adventure, Too Many Flowers on the Chamberlain Trail

Fogbow Near the Top of Hell Hill in Pt. Mugu State Park

Fogbow Near the Top of Hell Hill in Pt. Mugu State Park

Fogbows form opposite the sun in a manner similar to rainbows, except the water droplets that create a fogbow are much smaller than raindrops. Because a fog droplet is so small, the physics of the interaction is different. The result is often a diffuse, primarily white bow.

The photograph of the fogbow was taken Sunday morning on an out and back run from Wendy Drive to Mugu Peak. The sun was about 14 degrees above the horizon. More about fogbows and other atmospheric phenomena can be found on Les Cowley’s Atmospheric Optics website.

Some related posts: Rainbow Colors in Cirrus Clouds Over Los Angeles, Out and Back Trail Run to Mugu Peak

Hidden Pond – Old Boney Loop, Pt. Mugu State Park

Boney Mountain From the Hidden Pond Trail, Pt. Mugu State Park
Morning on the Hidden Pond Trail, Boney Mountain in the distance.

The Hidden Pond – Old Boney Loop is a variation of the XTERRA Boney Mountain Trail Run 21K course. The route is about a half-mile longer and has a couple hundred feet more of elevation gain, but all the key trails are the same. It starts/ends at the Wendy Drive & Potrero Road Trailhead.

Here is an interactive 3D terrain view of the Hidden Pond – Old Boney Loop and a few photos taken along the way.

Related post: Boney Mountain Half Marathon

Looking for Boney Bluff

Boney Bluff from the Backbone Trail

Every time I’ve run the Chamberlain segment of the Backbone Trail, I’ve looked at the intriguing rock formation near the top of the trail and wanted to climb it. Looking a bit like an aircraft carrier that’s run aground on a mountain ridge, it’s one of the most prominent peaks along Boney Mountain’s western escarpment. Named “Boney Bluff” by rock climbers, several sport climbing routes were established on the southeast side of the peak in the early 2000s.

Located just northwest of the junction of the West Tri Peaks Trail and the Backbone Trail, the peak is visible from many points in Pt. Mugu State Park. According to lidar-based 1-meter resolution 3DEP data, its elevation is 2985′, which is slightly higher than the 3DEP elevation of nearby Exchange Peak.

Boney Mountain plateau.
Boney Mountain plateau. Click for larger image.

Boney Bluff is one of many small peaks and rock formations that are found across the Boney Mountain plateau. Comprised of a fused mishmash of volcanic breccia, the rock quality of these formations ranges from very good to quite bad. Seemingly solid handholds or footholds can break, and because of the way the rock erodes, low-angle sections are often littered with granular rocks that can be very slippery.

Boney Bluff from the east.
Boney Bluff from the east.

Having climbed the Western Ridge on Boney Mountain, I approached Boney Bluff from the north, via the Tri Peaks Trail. My route climbed a slope to the east side of the peak, then traversed right to the base of a jumbled face with several oddly eroded ledges. A short, steep crack and grassy ramp provided access to the ledges above. NOTE: There may be a better way to climb the peak. I was trying to do a relatively direct route and avoid bushwhacking. The route is somewhat manky, but worked for me.

Summit block of Boney Bluff
Summit block of Boney Bluff.

The high point of the peak is on top of a summit block that caps the “island of the carrier.” Many of the formations on Boney Mountain have summit blocks, and these are often the most difficult part of the climb. Rule #1 involving summit blocks: Don’t climb up anything you can’t 100% for sure climb down! This one looked like it might be tricky, but with careful route-finding was pretty straightforward.

Because Boney Bluff is perched on the edge of the Boney Mountain plateau, on a clear day there are outstanding panoramic views of Pt. Mugu State Park and the Boney Mountain area from its summit. Today, the visibility was excellent and Mt. Baldy was visible, 75 miles to the east.

Lidar-based 3DEP Elevation Estimates of Some Boney Mountain Peaks
Lida-based 3DEP elevation contours of Boney Bluff. Click for a larger image.

The resolution of the 3DEP Elevation Data is very impressive. While checking the elevation of Boney Bluff, I also noted the 3DEP elevation of several other peaks in the Boney Mountain area. For more info about 3DEP see this U.S.G.S. website.

  • Sandstone Peak 3116′
  • Tri Peaks 3039′
  • Boney Bluff 2985′
  • Boney Crest 2974′ (Accessed via Western Ridge or Cabin Trail)
  • Exchange Peak 2969′
  • Big Dome 2934′
  • Boney Peak 2849′ (Both summits)
  • Inspiration Point 2811′

Some related posts: Looking for Boney Mountain, Looking for Boney Peak