In the winter of 1906, on a slope above the Wynoochee River in Grays Harbor County, Washington, a choker setter named August Brennan started his morning the same way he had started every morning for three years. He pulled on his caulked boots, wrapped a canvas jacket around himself against the coastal cold, and walked out onto a mountainside that no longer looked like a mountainside. It looked like a battlefield. The slope above him was sixty feet of near-vertical slash: broken branches, uprooted stumps, torn earth.

And from somewhere near the top of that slope, a steel cable as thick as a man’s wrist ran down through the debris and disappeared over the ridge, back to the steam donkey waiting at the landing. At the top of that ridge, held there by a block of iron the size of a wagon wheel, mounted two hundred feet above the ground on a Douglas fir that had been stripped bare and rigged with five tons of steel cable, was the machine that would move a three-hundred-foot log down this mountain today. The machine was a tree. Not a crane, not a steel tower.

A tree that had stopped growing three weeks ago, when a crew of riggers climbed to its crown with axes and cut off everything above the two-hundred-foot mark. What they left behind was the most powerful lifting device in the Pacific Northwest, and it was about to kill August Brennan. The story of how that tree came to be a machine begins with records kept in bound carbon-copy books that have a particular smell, a combination of mildew and something sharper, like linseed oil. The payroll books from the Polson Logging Company list men by first initial and last name, the date they started, the date they left, and the reason.

Most entries say transferred. Some say quit. A specific number say accident. The Grays Harbor County Coroner’s ledgers pick up where the payroll books stop.

The problem that made the spar tree necessary was this. By the 1870s, the logging industry in the Pacific Northwest had stripped nearly everything it could reach from water. The coastal strip, the forests close enough to tidewater or river that logs could be floated from the stump to the mill, was going thin. The timber that remained, the timber that would feed American cities for the next half-century, was back in the mountains, on slopes so steep you couldn’t walk them without grabbing branches, in valleys that had no roads and no rivers running the right direction.

Timber that a bull team couldn’t touch. The logging that built the Pacific Northwest began at the water’s edge. The first loggers in Washington Territory didn’t haul logs through mountains. They didn’t have to.

They walked to the nearest massive Douglas fir within a few hundred yards of Puget Sound, cut it down, and the log rolled or slid into the water by gravity. The mill was right there. When Henry Yesler built the first steam-powered sawmill on Puget Sound in 1852, he positioned it at the foot of a steep hillside above what would become Seattle, and he built a road down that hillside. Not a road for wagons, a road made of logs.

Smaller logs, peeled smooth and laid crossways in the mud at regular intervals, running straight from the forest above down to his mill at the water. He greased those cross logs with pig lard and tallow mixed with soap suds, which turned the surface into something close to ice. Then he sent teams of oxen up that road, six pairs in a string, twelve animals, to haul the cut timber down. The men who drove those teams were called bull punchers, usually of Scottish descent, rangy, loud, carrying goad sticks they used on the oxen with a precision that took years to develop.

Ahead of them, running on foot, were the grease monkeys, usually boys, sometimes as young as thirteen or fourteen, who carried pails of lard and ran ahead of the turn of logs to keep the skids wet. The term skid road entered the American language through those greased log highways. And when the industry moved on and the loggers came into Seattle looking for work or drink, they settled at the bottom of Yesler’s old road. That is where the term skid row comes from.

But the bull team had a limit. It could work only on relatively flat or gently sloping ground, only within a mile or two of water, and only in forests that had already been partly opened. Move it into the real mountains, the Cascades, the Coast Range, the Olympic Peninsula, and the animal team became useless. Too steep, too far, too heavy.

A three-hundred-foot Douglas fir, bucked into sections and yarded even half a mile uphill, would have required more animals than a logging company could afford to feed. In August of 1881, in Humboldt County, California, a man named John Dolbeer solved the first part of that problem. Dolbeer was born on March 12th, 1827, in Epsom, New Hampshire, and he came to the California timber country by way of the gold fields, which is to say he arrived broke and looking for steadier income. He found it in the sawmill business.

By 1864, he was a partner in the Dolbeer and Carson Lumber Company in Eureka, cutting redwood in the coastal hills of Humboldt County, trees that rivaled the Douglas firs of the Pacific Northwest in size and presented the same fundamental problem. They were enormous. They were heavy. They were on slopes.

And oxen were slow. What Dolbeer built in August of 1881 was a single-cylinder steam engine mounted on log skids, connected to a horizontal spool he called a gypsy head. He wrapped one hundred and fifty feet of four-and-a-half-inch manila rope several times around that spool, attached the far end to a log, and fired the boiler. The gypsy head spun.

The rope wrapped tighter, and a log that would have required twelve oxen and two hours of cursing moved in thirty seconds. The patent, number 256,553, was issued April 18th, 1882. The machine was called the steam donkey, a name that came from the loggers themselves, who said the machine was too puny to be rated in horsepower, so they gave it a smaller animal. They were wrong about the power.

Within a decade, Dolbeer’s machine had spread from the California redwood country north through Oregon and into Washington Territory. By the early 1890s, the steam donkey had replaced the bull team across most of the Pacific Northwest. Here is how ground lead logging worked, and here is why it eventually wasn’t enough. The steam donkey sat at a landing, a cleared flat area at the edge of the cutting zone.

A steel cable, by then replacing the original Manila rope, ran out from its drum across the ground and into the fallen timber. At the far end of that cable, a crew of men called choker setters moved through the slash and debris of the cutover ground, wrapping shorter lengths of cable, chokers, around individual logs. Each choker was clipped to the main line. Then the signal was given, the drum turned, and the steam donkey pulled the entire turn of logs across the ground to the landing, dragging them over stumps, through mud, around bends in the cable line.

It worked. But it worked the way brute force always works. It worked until it didn’t. The problem with dragging a three-hundred-foot Douglas fir log across a steep mountain slope is that the mountain keeps getting in the way.

The log would snag on a stump, the cable would go taut, and then one of two things would happen. Either the log would break free suddenly, jumping sideways with enough force to snap a man’s legs, or the cable itself would give way. A steel cable under one hundred thousand pounds of tension, when it breaks, does not go slack. It goes backward at a speed a man cannot outrun.

The problem was the ground. As long as logs were dragged along the ground, the ground itself was the enemy. The slopes were too steep, the debris too thick, the stumps too numerous. What the industry needed was a way to lift the logs off the ground entirely.

In 1904, a logger named Oscar Wirkola figured out how to use a tree to do it. The idea was called high-lead logging, and it began with a single act of improbable audacity. A crew would walk into a fresh cutting area and select the largest, straightest Douglas fir they could find, a living tree, still rooted, still growing, two hundred feet tall or taller. They would not cut it down.

They were going to climb it. The man who went up was called the high climber. He wore a pair of steel spurs strapped to his boots, each spur a curved spike about an inch and a half long, and he wore a leather safety belt with a rope that he looped around the trunk above him as he went. He carried an axe and a handsaw, and he started climbing.

Getting to the top of a two-hundred-foot Douglas fir with nothing but spurs and a belt takes most of a morning. The climber went slowly, kicking his spurs into the bark, moving the rope up a few feet at a time, stopping every thirty or forty feet to cut off the branches that stood in his way. By the time he reached the crown of the tree, he was high enough that the surrounding forest looked like a carpet beneath him. Then he began topping, cutting through the trunk itself, twenty or thirty feet below the crown, removing the top of the tree and leaving a clean post standing two hundred feet above the ground.

What happened when that top came free is something that every man in the cutting zone below had been warned about. The spar tree, relieved suddenly of thirty or forty feet of crown, would whip. The two-hundred-foot trunk would sway as much as twenty feet in either direction before it settled. More than one high climber was thrown from his perch in that moment.

The ones who survived held onto the belt and rode the tree like a pendulum until it stopped moving. Once topped, the spar was rigged. Iron workers climbed the bare trunk and mounted a massive iron block, a pulley the size of a wagon wheel, at the very crown. The main yarding cable from the steam donkey ran up through that block and back down the other side to the cutting zone, a thousand feet out into the timber.

A lighter cable called the haulback ran out to a pulley at the far end of the cutting zone and back, so the rigging could be returned to the workers after each turn. The choker setters wrapped their cables around the logs. The signal came. The donkey engine turned, and the logs lifted.

Not all the way. The high lead raised the front end of the log off the ground while the back dragged, but even that partial lift meant the log came across stumps and debris instead of through them. The speed was something that men who had worked with bull teams could not believe. Ground lead had moved logs.

High lead moved them the way a fishing line moves a catch: fast, through the air, swinging wide and coming in hard to the landing. In August of 1907, a man named E. Carlson was working the choker in a high-lead show. The Polson Logging Company employment ledger gives his job as choker setter.

The Grays Harbor County Coroner’s docket, cross-referenced in the same ledger, gives the cause of death as cable injury. He was in the cutting zone, on the slope below the spar tree, with his job being to get up close to the logs and wrap the choker cables around them so the donkey engine could yard them in. It was the most dangerous position in the most dangerous industry in the Pacific Northwest. When a log is moving on a cable coming fast, lifted at the front, the back end dragging and jumping over stumps, the men around it have to know exactly where it is going, and they have to be somewhere else.

Most of the time, the training held. Most of the time a choker setter learned in his first weeks to read the cable, to hear the sound of a log snagging, to know when to run and which direction. Most of the time, that was enough. On August 14th, it wasn’t.

The distance from the Polson camp to the nearest town with a physician was eleven miles of skid road, and it took the better part of a day to cover it. The physician’s note, attached to the coroner’s entry, is three lines long. It ends, “Could not have survived. ”

E.

Carlson is one entry. The ledgers have others. What is difficult about counting the dead in the Pacific Northwest logging industry between 1890 and 1920 is that counting required the cooperation of the companies, and the companies had no legal obligation to cooperate fully. What survives is partial.

The coroner’s records are more complete, but they cover only the cases that came to a coroner’s attention, which required that the death occur close enough to a town that someone could be notified. Men who died in remote camps, far from any county seat, were sometimes buried in the woods and never recorded anywhere. What the partial record suggests is that logging was, by the first decade of the twentieth century, the single most dangerous occupation in the American West. The high-lead system, for all its efficiency, made the work more deadly at the exact moment it made it more productive.

The logs moved faster. The cables were under more tension. The choker setters were closer to more moving mass than they had ever been. The development of the high lead accelerated yarding.

It accelerated dying, too. The actual number of men killed in the Pacific Northwest high-lead shows between 1904 and 1925 was certainly higher than anything in the written record. By the 1930s, the spar tree was beginning to lose ground to a different machine: the steel tower yarder, a portable steel frame that could be moved from one cutting area to the next on its own tracks, doing everything the spar tree had done without requiring a crew to climb two hundred feet in the air with an ax and a prayer. The high climbers didn’t disappear overnight.

Some of them worked into the 1950s, because the steel towers couldn’t reach certain slopes the way a well-positioned spar tree could, and because there were still old-growth Douglas firs out there that made better spars than anything a steel mill could fabricate. But the era was ending. The last major spar tree operations in the Olympic Peninsula and the Coast Range were winding down by the time the Korean War ended. What finished the job was roads.

The logging companies began building all-weather roads into the high country, blasting them through granite, grading them with diesel bulldozers, paving them in some places. The fundamental problem that Dolbeer and Wirkola had spent their careers solving simply went away. A truck could drive to the log. The log could be loaded with a steel crane, a real crane, a machine made for the job, and driven to the mill in an afternoon.

The spar tree had been a response to impossibility, and once the impossibility was removed, the spar tree became a memory. In the Hoh River Valley on the Olympic Peninsula, and in the hill country above the Chehalis River in Grays Harbor County, the old high-lead shows still carry the shape of what happened there. The old-growth stumps are still standing, eight and ten feet across, their tops fifteen feet off the ground where the springboard notches were cut. They are still there because no one has found it worth the effort to remove them.

And if you look carefully in the right places, you will sometimes find the spar tree itself. A single massive trunk, bare of bark now, standing alone in a second-growth forest that has grown up around it since the cutting stopped. The top is gone, cut off by the high climber a hundred years ago, and there is usually still a rusted bolt or two near the crown where the rigging was attached, though the iron block and the cables were taken when the show moved on. It looks like nothing now.

A dead tree in a young forest. What it was was a two-hundred-foot crane built from a living Douglas fir, rigged by men who had spent years learning how to climb at heights that should have been impossible, to move logs that weighed as much as a locomotive down mountains that had no roads. It moved millions of board feet of timber out of the Pacific Northwest mountains for thirty years.

And the men who ran the cables and set the chokers and read the tension in a steel line by sound and feel, those men are the reason the cities they never lived in got built.