In August 1892, a crew of lumbermen stood at the base of a giant sequoia in Converse Basin, California, and concluded that they could not cut it down. The problem was not the length of their saw, though the saw was indeed too short. The base of the tree flared outward into a mass of root, bark, and dead wood more than eighty feet around. A saw laid against it would not have been cutting a trunk; it would have been cutting a hillside.

So they built a platform. They drove iron pins into the bark, laid planks across them, and climbed. Then they built another platform above that one, and another above that, until they stood fifty-two feet above the forest floor on a scaffold bolted to the side of a living tree. There, at the height where the trunk had finally narrowed enough for a saw to cross it, they began to cut.

That tree was called the General Noble, and by the record, it is the largest tree human beings have ever cut down. To understand what those men were doing, one has to understand what Converse Basin was. It held the densest concentration of giant sequoias ever known to exist, roughly eight thousand mature trees growing close together on the western slope of the Sierra Nevada. Many were more than a thousand years old; some had passed two thousand.

They were trees already ancient when the first stone was laid at Notre Dame. A sequoia is not the tallest tree in the world; the coast redwoods are taller. What the sequoia possesses is bulk. Its trunk does not taper like an ordinary tree; it rises like a column, holding its thickness for a hundred feet or more before beginning to narrow.

At the ground, the largest measured close to forty feet through. That is not a diameter to be pictured by comparison to other trees. That is a diameter to be pictured by comparison to buildings. In 1892, the Kings River Lumber Company began cutting Converse Basin down.

The company had been formed four years earlier by two men, Hyram Smith and Austin Moore, who incorporated it in 1888 and bought thirty thousand acres of Sierra timberland. By 1889 they had two sawmills running near a settlement called Millwood, and they had solved the problem that had long protected the sequoias: distance. The groves sat high in steep country, too far from any railhead for hauling to make sense. Their answer was a flume, a V-shaped wooden trough carrying water down out of the mountains, with lumber riding on the water.

It ran fifty-four miles from the mills to the town of Sanger on the valley floor, crossing the gorges of Kings Canyon on purpose-built trestles and fed by a reservoir they dammed into existence and called Sequoia Lake. In its first year, twenty million board feet of timber went down it. Over the following twenty-six years, under three successive company names, the basin was clear-cut, not thinned or selectively logged, cut until almost nothing of size remained standing. The man who ran the cutting was Franklin A.

Bool, the supervisor of the logging operation, responsible for where the crews went and which trees came down. Almost everything about him has been flattened by time into a single decision, and the record is thin enough that the story that survives about him may not be the true one. The story is this: somewhere in the middle of the destruction, Bool looked at one particular tree and ordered his men to leave it alone. It was the biggest thing in the basin, thirty-six feet through at the ground, 113 feet around at its base, 269 feet tall, and more than two thousand years old.

The story says Bool spared it deliberately as a marker, so that someone standing in the wreckage afterward could see what had been there before. Around 1895, a physician from Fresno named A. Sweeney gave the tree Bool’s name; it carries it still. Historians who have gone back through the record are less romantic.

The likelier explanation is that the tree was simply too large and too awkwardly situated to be worth the trouble, sitting where getting it out would have cost more than the wood was worth. The largest tree in the entire American national forest system may be standing today not because a man had a conscience, but because a company did the arithmetic, and the arithmetic said no. Here is how a tree that wide actually came down. The first job was not cutting; it was building.

Two men set springboards into the trunk, iron-shod planks driven into notches chopped into the bark. On an ordinary tree, that got the fallers above the flare of the base, perhaps six or eight feet up. On a sequoia, it was the beginning of a scaffold that could climb fifty feet or more, tier above tier, each level cut, pinned, and braced by hand before anyone could stand on it. The springboard itself was almost nothing: a plank six or seven feet long with an iron shoe on one end shaped like a hoof.

The faller chopped a notch into the bark, drove the shod end into it, and the board locked in place under his own weight; the harder he pressed down on the outer end, the tighter the iron bit into the wood. No bolts, no ropes, no rail. A man stood on that board with several hundred feet of tree above him and a drop below, pulling one end of a saw twenty feet long for ten hours at a stretch. Photographs of this work survive, and the hard thing to take in about them is how ordinary the men look, standing on planks driven into the side of the largest living things on the continent in waistcoats and flat caps, waiting for the photographer to finish.

Then came the undercut. Working from the scaffold, the fallers chopped a wedge out of the side of the trunk facing the direction they wanted the tree to fall. On a sequoia, that wedge was not a notch but an excavation, a cave chopped into the side of a living thing, deep enough for a man to stand inside. Only then did the saw come out.

A falling saw for a tree that size ran fifteen, eighteen, twenty feet or longer, a single strip of steel with a man on each end, and on the largest trunks it was still not long enough to reach through. So they worked from both sides, cutting in toward a center they could not see, driving iron wedges into the cut with sledgehammers to keep the weight of the tree from pinching the saw and trapping it. They were not sawing through the tree; the saw was too short. They were sawing a groove around it while several thousand tons of living wood pressed down on the cut from above.

Four men could bring down one tree in thirteen days. That figure is not a figure of speech. In 1891, four men, Bill Mills, S. D.

Fipps, a man known only as Barney, and John Lukey, went to work on a tree later called the Mark Twain. It was sixteen feet through and had been alive for 1,341 years. They finished thirteen days later. The men worked in shifts on the springboards, pulling a blade back and forth across a cut that advanced a few inches a day, driving wedges, resharpening steel that went dull against wood.

They ate on the scaffold, climbed down at dark, and climbed back up in the morning to a cut exactly where they had left it. On the thirteenth day, the tree came over. Then came the detail that changes how the entire enterprise must be understood. Sequoia wood is brittle, light, resistant to rot almost indefinitely, and it has almost no give.

A tree of that mass, falling its own height, does not land; it detonates. The trunk struck the ground and broke apart along its length, splitting into slabs and splinters that were no longer lumber and could never be made into lumber again. The crews knew this would happen; they had watched it happen before. They tried everything they could think of to prevent it.

They dug trenches along the fall line and packed them with branches and earth to cushion the impact. They dropped trees uphill so they had less distance to travel. They timed falls onto beds of smaller timber already felled for that purpose. It helped; it did not solve it.

Federal estimates put the total efficiency of the Converse Basin operation at 25 to 30 percent. Of the biggest trees, the ones that had taken the most men, the most days, and the most scaffolding to bring down, as much as 80 percent was lost on impact. Four out of every five parts of the largest living things in North America were reduced to debris on the forest floor in the moment they landed. What could be salvaged went out as fence posts, stakes for grapevines, roof shingles, pencils, and matchsticks.

What survived the fall still had to leave the mountain. It was cut into boards at the mill, stacked, and fed into the flume, traveling fifty-four miles on running water, dropping thousands of feet in elevation between the mill and the valley floor. Men worked the length of the line to clear the jams. The boards came out at Sanger hours after they went in.

Two thousand years of growth, cut by hand over thirteen days by four men standing on a scaffold, and the usable remainder went to the vineyards of the San Joaquin Valley to hold up grapevines. The company never turned a profit. That is the ending, and it arrives without drama. Kings River Lumber became the Sanger Lumber Company, which became Hume-Bennett, and each of them cut what was left, and none of them made the operation pay.

The wood was too brittle, the country too steep, the trees too far from anywhere. By 1918, the cutting in the basin was essentially finished. Roughly eight thousand mature giant sequoias had come down. The General Noble, the largest tree ever cut, did not even go to a sawmill; it went to Chicago.

The Department of the Interior wanted a giant sequoia at the World’s Columbian Exposition, and the Kings River Lumber Company supplied one. After the crew brought it down from their scaffold fifty-two feet up, the upper section of the trunk was hollowed out and cut into curved segments like barrel staves so it could be reassembled later. The tree was divided into forty-six pieces, some weighing more than four tons each. It took eleven railroad cars to move them across the country.

The full cost of cutting, shipping, and installing it came to $10,475. 87, an accounting figure precise to the penny for a tree that had been standing for roughly three thousand years. In Chicago it was rebuilt so visitors could walk inside it. Twenty-seven million people came through the exposition that summer, and many who stood before the sequoia refused to believe it.

They assumed it had been assembled from pieces of several different trees, because no single tree could be that size. The exhibit picked up a nickname that followed it for years: the California Hoax. After the fair, the pieces went to Washington, were reassembled on the grounds of the Department of Agriculture as a structure called the General Noble Redwood Treehouse, and stood there for more than forty years, slowly rotting until it deteriorated far enough to be taken away. The stump is still there in the basin.

People go to look at it; it is called the Chicago Stump. One tree still stands in Converse Basin that gives the measurement directly. The Boole tree is thirty-six feet through at the ground, its base 113 feet around; walking a full circle at its foot takes about forty paces. It is the largest tree in the national forests of the United States, and it has been alive for more than two thousand years.

It is standing where it stands as the clearest possible statement of what was lost, because the Boole tree is not an exceptional survivor of a wild forest; it is a leftover. Eight thousand trees of that general order came down around it, and this one stayed because of a decision that may have been conscience and may have been bookkeeping. There is no longer any way to know which. The decision that eight thousand trees were worth more as grape stakes than as trees was made somewhere else, by people who never climbed a scaffold, on the basis of a calculation that turned out to be wrong even on its own terms.

The crew in August 1892, fifty-two feet up on a platform they had built themselves, were not fools and were not vandals. They were extremely skilled men doing precise and dangerous work with the tools of their century, and the scaffolding alone was genuine engineering. Everything about the method was sound. The only thing wrong with it was what it was pointed at.

Converse Basin is still there, public land now, inside the Giant Sequoia National Monument. What a visitor finds is a second-growth forest, young sequoias a century and a bit old coming up through the remains of the cut. The stumps are what stay with people. They are enormous, flat on top, and still solid, because sequoia wood does not rot.

The trees that were cut are gone, most of the wood was wasted, the company failed, and the exhibit was called a fraud. But the stumps have outlasted all of it, and will outlast the rest. They cut down the biggest living things on the continent, four-fifths of it burst into splinters when it hit the ground, and the company that paid for all of it went broke.