Category Archives: nature|trees

Three Points – Mt. Hillyer Loop

Trail runner on the Mt. Hillyer Trail in the San Gabriel Mountains
Mt. Hillyer Trail

Snow — if there has been snow — disappears quickly from the middle elevations of the San Gabriels this time of year. Activity increases with the rising snowline, as visitors eye their favorite trails and peaks.

I was driving up Hwy 2 to Three Points to do a run with Skye. In a normal year we would be doing the Three Points – Mt. Waterman Loop, but for the second time in 11 years, the trails in the Mt. Waterman area had been closed by a wildfire. In 2009, the Station Fire burned 160,557 acres in the San Gabriel Mountains, and just last year, the Bobcat Fire burned 115,796 acres. In several places, including Mt. Waterman, the Bobcat Fire burned terrain that had been burned in the Station Fire.

Coulter pine cone, heavy with resin
Coulter pine cone, heavy with resin

With entry prohibited in most of the Bobcat Fire burn area, the Three Points Loop around Mt. Waterman was out for now. Instead, we decided to do a segment of the traditional AC100 course from Three Points to Chilao, and then return to Three Points using the Silver Moccasin Trail.

Here’s an overview of both the Three Points – Mt. Hillyer Loop (yellow) and the Three Points – Mt. Waterman Loop (red). An overlay of the Bobcat Fire BAER Soil Burn Severity has ben added to the Google Earth image. The burn severity classes are high (red), moderate (yellow), low (light green), unburned/very low (dark green), and no data (black). Trail and placemark locations are approximate.

Trail runner on the PCT near Sulphur Springs Road
PCT near Sulphur Springs Road

On today’s run we followed the Pacific Crest Trail northbound from Three Points toward Sulphur Springs Trail Camp. Just before the camp, the PCT splits. We followed the left fork (uphill), and then around to the South Fork Little Rock Creek drainage and Sulphur Springs Road. The PCT parallels the road for about a half-mile, then crosses the road. At this point we left the PCT behind and continued up the road (5N04) to Alder Saddle and forest road 3N17. We continued left (south) on 3N17, bearing left on Santa Clara Divide Road at a fork, and going uphill to Rosenita Saddle.

At Rosenita Saddle we turned right (southwest) onto the Mt. Hillyer Trail. The trail starts at the back of a small parking area. The trail climbs to the high point of Mt. Hillyer, and then descends through large granite boulders in the Horse Flats bouldering area. (If you are a rock climber, bring your shoes!) The Mt. Hillyer Trail intersects the Silver Moccasin Trail near the Horse Flats Campground.

To add a little mileage and elevation gain, we turned right (south) on the Silver Moccasin Trail and continued to Chilao Campground. After saying hi to Chilao, we turned around and followed the Silver Moccasin Trail north, back to Three Points.

The trail run was a little over 13 miles, with a cumulative elevation gain of about 2100′. The high point was about 6200′, on Mt. Hillyer. The route-finding on the loop can be a bit tricky the first time around.

Moon and Sycamores, Malibu Creek State Park

Moon and Sycamores, Malibu Creek State Park

The photograph Moon and Sycamores was taken at dawn, near Malibu Canyon and Piuma Road, at the start of this morning’s Bulldog Loop trail run in Malibu Creek State Park.

A quarter-mile from the top of Bulldog Mtwy fire road in Malibu Creek State Park.
A quarter-mile from the top of the Bulldog climb.

According to the Tempe sensor on my pack, the temperature ranged from a chilly 32° F along Malibu Creek to around 65° F on the crest. It was a near perfect morning to be outdoors.

Here’s an interactive, 3D terrain view of my GPS track from a previous run of the Bulldog Loop from Malibu & Piuma.

Some related posts: Bulldog Loop Plus the Phantom Loop; Trees, Bees, and a Washed-Out Footbridge on the Bulldog Loop in Malibu Creek State Park; After the Woolsey Fire: Bulldog Loop

Rivas Canyon Eucalyptus

What is it? Photography by Gary Valle'.

These shallow channels looked like they might have been cut by a woodworker’s router. But they were cut — or I should say chewed — by Longhorned Borer beetle larvae, feeding on the cambium of a eucalyptus tree.

Fallen eucalyptus in Rivas Canyon. The grooves are from beetle larvae feeding on the cambium of the tree.
Fallen eucalyptus in Rivas Canyon. The grooves are from beetle larvae feeding on the cambium of the tree.

The tree was across the trail in Rivas Canyon. Not unlike the fallen oak on Rocky Peak, Southern California’s multi-year drought likely weakened the eucalyptus, making it susceptible to other pests.

The Rivas Canyon Trail connects Will Rogers State Park to Temescal Canyon. Today (and last weekend) I ran it as part of a long loop from the “End of Reseda” at Marvin Braude Mulholland Gateway Park.

Some related posts: Will Rogers – Temescal Loop, Will Rogers Western Ranch House, Downtown Los Angeles and San Jacinto Peak

Fallen Oak

A large valley oak along Rocky Peak fire road that toppled following five years of drought.

The fallen oak pictured above — one of the larger valley oaks along Rocky Peak fire road — toppled over in the summer of 2016 following five years of drought. Fire and drought are a natural part of the valley oak’s habitat and the trees have evolved to withstand ordinary variations in their environment. However, severe fires or extended droughts, or fire in combination with drought can overcome the tree’s defenses. The drought may have been the culminating factor in the felling of this oak, but fire and other factors may have also played a role.

Base of large valley oak along Rocky Peak fire road that toppled following five years of drought.
Base of large valley oak that toppled following five years of drought. Click for larger image.

According to the Fire Effects Information System (FEIS), the heart-rot fungus Armillaria mellea is usually present in valley oaks and larger oaks tend to be hollow or rotten in the center. The toppled oak was hollow near its base and its interior appears to have been blackened by fire. The FEIS describes instances where the decaying wood in the interior of older valley oaks could ignite in a fire, but leave the exterior bark uncharred.

What fire might have burned the tree? There are two possibilities: the 2008 Sesnon Fire and the 2003 Simi Fire. It probably wasn’t the Sesnon Fire — this photo of the tree, taken about a month after the Sesnon fire, shows little impact. I couldn’t find a photo of the tree following the Simi Fire, but photos taken nearby show a severely burned landscape. Ultimately, it appears fire and drought weakened the tree, accelerating its heart rot and weakening its roots to the point it could no longer support itself.

Photos of the fallen oak are from this morning’s foggy run along Rocky Peak fire road.

Related post: Ahmanson Blue Oak Succumbs to Climate ChangeChumash Trail – Sesnon & Simi Fires

Some Fall Color to Bring in the New Year

Some Fall Color to Bring in the New Year. Photography by Gary Valle'.

While much of the country shivers in the cold climes of Winter, the muted colors of the changing season have finally reached the lower elevation areas of Southern California.

Turning leaves of a willow in East Las Virgenes Canyon. December 28, 2017.
Willow in East Las Virgenes Canyon

In this area, the leaves of Valley Oaks usually begin to turn around mid-December and the trees lose their leaves around the beginning of the new year. About a month and a half later trees begin to sprout new leaves, usually in mid to late February. From year to year, the time frame can vary by as much as 2-3 weeks.

The photo of Valley Oak leaves was taken December 28, 2017, in Upper Las Virgenes Canyon Open Space Preserve (formerly Ahmanson Ranch). This willow in East Las Virgenes Canyon was also showing some nice color.