The Fire Below

Looking back millions upon millions of years ago to the tectonic events that gave birth to the San Andreas fault and California, earth scientists have been striving to determine what forces might have caused the southern Sierra Nevada to lose its root about 3.5 million years ago. It’s a good bet that a range of strange goings on in and around the southern Sierra has been caused by delamination of the subcrustal root of the Sierra: the further uplift of the southern Sierra, subsidence of another portion of the Sierra, tremors and volcanos, and who knows, maybe the 1969 Mets.

One particular event comes to mind: the supervolcanic eruption at Long Valley only 760,000 years ago. You may skeptically inquire, “only 760,000 years?” Bearing in mind that if that infamous supervolcanic explosion-implosion was caused by that splitting of the crust 3.5 million years ago, 760,000 years doesn’t sound like that much. It is as though the initial delamination occurred two weeks ago and a resulting supervolcano then occurred just three days ago.

I don’t mean to venture any conjecture about the probability of major eruptions at or near Long Valley in the immediate future, but rather, I wish to submit that whatever general process existed under the southern Sierra Nevada 760,000 years ago is likely to still be an active process. There’s likely to be something very big going on down there.

What was our first clue?

Perhaps our first clue was the abnormally thin crust under the Sierra.

Where is the crust at its thinnest? Curiously enough, the crust under the Sierra appears to be at its thinnest from around Mount Williamson south to Olancha Peak. This zone includes the highest peaks in the Sierra, and the Hockett Trail cuts right through the heart of it.

Then again, maybe our first clue was the abnormal activity detected in the mantle under Visalia.

The “mantle drip” cell that earth scientists have been investigating lately is thought to be centered approximately below Visalia, and the arc of its circumference cuts deeply into the western Sierra; deepest at the Hockett Plateau. Clearly then, the Hockett Trail cuts through the heart of this zone as well.

Then there’s that other clue: the subsidence that CalTech researchers have identified as roughly centered at the Kaweah Delta. Again, this is the domain of the Hockett Trail.

Oh, and one more thing: why does it appear that the western Sierra is rising west of the Kern Canyon Fault? Could recent activity along this fault, which the Hockett Trail follows from Trout Meadows to Golden Trout Creek, betray some tension caused by convection in the mantle west of that fault?

It seems like a lot is going on under Hockett country.

The Golden Trout Trail

The Hockett Trail was first chosen for its efficacy as a trans-Sierra route, and specifically chosen by the Union Army for its usefulness as a trail between forts in Visalia and the Owens Valley. Coincidentally, or perhaps not so coincidentally, the route of that old trail also traces the native range of California’s distinctive sport fish, the California golden trout. In addition, the Hockett route follows streams east and west of that native range. This makes the Hockett route an ideal route for the sport fisherman.

The three watersheds of the golden trout are, from west to east, the Little Kern River, Golden Trout Creek, and the South Fork Kern. The Hockett Trail followed these streams from its crossing of the Little Kern at Wet Meadows Creek, down the Little Kern Valley, up Kern Canyon, Golden Trout Creek, and finally the South Fork Kern.

“Here the trail branches, and there are two routes to Big Cottonwood, two or three miles further on. Both routes are plain. The one following up the east bank of the stream leads over a low divide between Little and Big Cottonwood, and brings one finally to the last-named. Here is an ideal camp; wood, water, grass, and trout are in plenty. The wonderful golden trout of the Sierras are here, in overwhelming abundance. It is no exaggeration to say that the poorest angler can here at almost any time of day catch strings which would drive the frequenter of local streams wild.” — Hubert Dyer, Sierra Club Bulletin, 1893

The attractiveness of the Hockett route isn’t limited to the Kern watershed. On the west side, the Hockett Trail followed the Kaweah River from the Kaweah Delta to the headwaters of the South Fork Kaweah. On the east side, the Hockett Trail followed Cottonwood Creek, stocked with golden trout since 1876, before dropping down “Hockett Hill” into the Owens Valley and turning north toward the Owens River, yet another notable fishing stream of the region.

Today, the Hockett Trail route and the trout streams along it enjoy wilderness protection from South Fork Campground on the west side to the outskirts of Horseshoe Meadows on the east side, largely due to the creation of the Golden Trout Wilderness in 1978. Unfortunately, fishing on the lower Owens River is not what it was before the Los Angeles Aqueduct, though efforts are being made to restore the stream. As for the state of the trail itself, it is not wholly maintained, and segments of the original trail were completely abandoned as far back as 1969 and 1940. Much of the original route is now paved over, and some of it has been under Lake Kaweah since 1962.

The Early Hockett Trail

The trans-Sierra supply route of the Civil War period commonly known as the Hockett Trail was completed in 1862-63 for two functions:

  1. moving miners and supplies to and from mines in the Coso Range east of the Sierra.
  2. moving soldiers and their supplies to and from Fort Independence (AKA Camp Independence). This was primarily to defend and promote the interests of white settlers against local Indians.

The first function, the commercial reason for the trail, is the reason why the trail was named after the Visalia businessman John Hockett. For this same reason, the Hockett Trail may also rightly share the name “Coso Trail” with the Dennison and Jordan Trails.

The second, military function is the reason why it was also called the “Trail to Fort Independence”. Hockett and the Union Army worked together in developing the trail.

The Hockett Trail found other uses before it was even completed. It served as a route for discovering and accessing new Sierra peaks and valleys. Mineral King was discovered by a hunter on the Hockett Trail crew in 1862 (Hale Tharp later claimed to have visited Mineral King earlier, but even if he did his visit had no historical impact). Ranchers appear to have used the trail to move their livestock to the Hockett Plateau during the drought of 1863.

Though the Hockett Trail was the primary trail across the southern Sierra throughout the late 19th Century, it probably did not serve the Cerro Gordo mines, as they were not generally known until after the Hockett Trail lost much of its purpose as a supply route with the completion of the McFarlane toll road over Greenhorn Mountain in 1864, the opening of a stage service on that road in 1865, and the end of the Owens Valley Indian War in 1865.

The city of Los Angeles gained dominated trade with Cerro Gordo by 1868, and her geographic advantage over Visalia became clear. By 1905, as work on the Los Angeles Aqueduct began, Owens Valley was in practical terms within LA’s city limits.

The completion of Mineral King Road in 1879 diverted traffic away from the westernmost segment of the Hockett Trail, but it may have made the rest of the trail even more popular. The original Hockett Trail, often labeled the Trail to Fort Independence, can be seen skirting around the end of the Great Western Divide on area maps throughout Sequoia National Park’s first decade (the 1890s).

“The Hockett trail was made in early days, and to-day it remains a plain, well-blazed track from Lone Pine through to Visalia.” — Hubert Dyer, Sierra Club Bulletin, 1893

Mountaineering, golden trout, and the establishment of Sequoia National Park kept the trail popular into the 20th Century. The first people to climb Mount Whitney, America’s highest peak until 1959, were fisherman who used the Hockett Trail to get to the Kern River, and the Hockett route continues to give sport fisherman access to some of the most striking freshwater fish in the world.

The Coyote Cutoff

The Hockett Trail provided a further advantage, which was utilized more and more as time went on. This feature was a cutoff over Coyote Pass that shortened the trip across the Sierra substantially.

The Hockett Trail was blazed during the Civil War, but to fight another war, against the Indians of Owens Valley. This is why it was also called the Fort Independence Trail. Originally, this trail was conceived for pack trains rather than horsemen and hikers, so it skirted around the Great Western Divide rather than crossing the great barrier. The route, however, made a crossing of the Great Western Divide feasible, not by way of rocky ridges, but by ascending the forested slopes along Rifle Creek.

Though this cutoff was a difficult one, it was not particularly hazardous, and was known to be used commonly by horsemen as late as the 1970s.

The Independence Trail

The southernmost 12,000-foot peak in the Sierra Nevada is Olancha Peak, also the southernmost 11,000-foot peak, and one of the three southernmost 10,000-foot peaks of the range. At this latitude, the Sierra has a nearly perfect north-south orientation. The three divides, the Western Divide, the Great Western Divide, and the Sierra Crest, each have their southernmost 10,000-foot peaks at the same latitude (36° 15’ 50”):

Olancha Peak (Sierra Crest): 12,123’
Angora Mountain (Great Western Divide): 10,202’
Maggie Mountain (Western Divide): 10,042’

This is the southern terminus of the High Sierra.

South of these peaks, each of the three divides drops considerably, yet there is no easy way across the range north of Tehachapi Summit. The range continues to be rugged and there is progressively less reason to cross the range as one proceeds toward the southern end of the Sierra. The closer one gets to Tehachapi, the less reason there is to bother with a Sierra crossing.

For good reason, the first trails across the Southern Sierra kept south of the High Sierra, but there were problems with this strategy.

In avoiding the High Sierra, The Dennison Trail and Jordan Trail both crossed two canyons of the Tule River. The Hockett Trail, also known as the Fort Independence Trail, avoided the rugged Tule River watershed entirely by following the South Fork Kaweah River to the Little Kern. This route climbed to over 9800 feet, yet quickly became the preferred route to Trout Meadows, the grand junction of the Southern Sierra. It was difficult until the snow melted, but once most of the snow cleared from the popular trail it was an easier way to go. Above 8800 feet, the route is free of steep slopes, so even with some snow, it is rather easy going.

Beyond Trout Meadows, the Jordan Trail and Dennison Trail encountered another difficulty: the Kern River. Directly east of Trout Meadows, Kern Flat offers a natural fording point, but it is less than ideal, particularly in spring when the river can be treacherous. The head of the Jordan party, Captain John Jordan, drowned at Kern Flat while returning west to announce the opening of his trail.

The Hockett Trail, alternatively, followed the Kern Canyon north to a better ford, north of what was once named Volcano Creek, now Golden Trout Creek. The river has less volume upstream of Golden Trout Creek and Coyote Creek, and better yet, it splits into several rivulets for a short distance.

A bridge was quickly constructed at Kern Flat that made the Jordan-Dennison Trail more safe.

Ironically, it has been reported that Captain Jordan blazed a route up Golden Trout Creek as a late season alternate. Perhaps he would have been better off to select it as his main route, but then it headed a little too far north for his purposes.

The Jordan Trail and Dennison Trail were trails to the Coso Mines, not to Lone Pine or any points north, and so they were temporary mining trails. They crossed the Sierra Crest by way of Olancha Pass and Haiwee Pass, and from the base of these exits, required a significant trip to get to the fertile, settled country north of Owens Lake.

The Hockett Trail follows the lay of the range in a way that its sister trails do not, following ridges, plateaus, passes, seismic faults, saddles, canyon bottoms, and fords in ways that almost appear engineered.

The original trail dipped south of the end of the High Sierra where it skirted around the Great Western Divide. Early accounts indicate that the original route appears to have been preferred till the end of the 19th Century. This original trail intersected the Coso Trail at the south end of the Great Western Divide, opening the route to southerly alternatives for crossing the range. Two options availed themselves to the traveler for ascending out of Kern Canyon, one on either side of Golden Trout Creek. As one approached the crest, one could also opt to cross at Cottonwood Pass, often taken by early Whitney explorers, but slightly more difficult so far as crossing the range is concerned. For those continuing along the main route to the crest, there is a choice between Trail and Mulkey Passes.

Notwithstanding this abundance of choices, the primary route offered many outstanding benefits, such as an excellent ford on the Kern, a remarkably low ridgeline between the Kern and South Fork Kern watersheds, and relatively easy passage over the Sierra Crest.

The Hockett Trail, given that it was a High Sierra trail, provided unsurpassed access to mining and recreational destinations. The beautiful alpine valley of Mineral King was discovered by the Hockett Trail crew, and the first ascents of Mount Whitney employed the Hockett Trail.

As an added benefit, the Hockett Trail also provides unmatched access to every variety of golden trout, as it follows the Little Kern, the Big Kern, Golden Trout Creek, and the South Fork Kern as well. It might justifiably be called the Golden Trout Trail.

Kern Canyon

The form of the Southern Sierra is like a tree, where the trunk of that tree is the Kern Canyon.

Kern Canyon may be one of nature’s least natural wonders. Conceived by an earthquake fault and molded by glaciers, it is as straight a terrestrial indicator of true north as can be found, and seems to be dug at right angles, without a single truss to hold up the great granite walls.

This stonewalled canal splits the Southern Sierra into two twin divides, each rising to elevations over 13,800 feet. The eastern divide is the loftier of the two (by 700 feet), but the western divide is the twin that endures most of the weather, and sports the most southerly glacier in the range.

The western divide even branches in two, giving birth to two lesser divides that each rise above 12,000 feet.

At this highest and most splintered segment of the Sierra Nevada, crossing the range can be a difficult task.

Sierra del Fuego

The southern Sierra, from the headwaters of the Kern River in Sequoia National Park southward to the sweep of the Kern River into the far southern extreme of the Tulare Basin, is morphologically dominated by a single seismic fault that splits the range into western and eastern legs, and gives the range a southerly slope with a solar inclination that helps to give it a rather sunny, flammable aspect. This southerly descent is considerable. Though the two divides of the Southern Sierra feature peaks as high as Mount Whitney (14,495 feet) to the east and Mount Kaweah (13,802 feet) to the west, one need not travel far south before no more 10,000-foot peaks remain.

In this sun-bathed high country, the trout seem to disappear and reappear in the golden light that flows through the rivers and creeks, as the flux of the streams sways left and right like a tree in the breeze. The gold trout sometimes seem custom-made for these sunward streams.