Latigo got a confused glimpse of black tails and gray forelegs and dappled fetlocks; he saw chaps, and jeans, and boots jammed into stirrups. He tried to get up and a horseshoe clanged against the back of his skull. His hat saved him from unconsciousness, but he went heavily to his knees with his head down, like a man who means to pray, his vision full of stars and the back of his neck instantly soaked with blood from the gash the passing hoof had opened in his scalp.

Now he heard more screaming horses. Screaming men, as well. He got up again, coughing out the dust raised by the passing horses (such acrid dust, too; it clawed his throat like smoke), and saw Hendricks trying to spur his horse south and east against the oncoming tide of riders. He couldn’t do it. The rear third of the canyon was some sort of swamp, filled with greenish steaming water, and there must be quicksand beneath it, because Hendricks’s horse seemed stuck. It screamed again, and tried to rear. Its hindquarters slewed sideways. Hendricks crashed his boots into the animal’s sides again and again, attempting to get it in motion, but the horse didn’t—or couldn’t—move. That hungry buzzing sound filled Latigo’s ears, and seemed to fill the world.

“Back! Turn back!”

He tried to scream the words, but they came out in what was little more than a croak. Still the riders pounded past him, raising dust that was too thick to be only dust. Latigo pulled in breath so he could scream louder—they had to go back, something was dreadfully wrong in Eyebolt Canyon—and hacked it out without saying anything.

Screaming horses.

Reeking smoke.

And everywhere, filling the world like lunacy, that whining, whingeing, cringing buzz.

Hendricks’s horse went down, eyes rolling, bit-parted teeth snapping at the smoky air and splattering curds of foam from its lips. Hendricks fell into the steaming stagnant water, and it wasn’t water at all. It came alive, somehow, as he struck it; grew green hands and a green, shifty mouth; pawed his cheek and melted away the flesh, pawed his nose and tore it off, pawed at his eyes and stripped them from their sockets. It pulled Hendricks under, but before it did, Latigo saw his denuded jawbone, a bloody piston to drive his screaming teeth.

Other men saw, and tried to wheel away from the green trap. Those who managed to do so in time were broadsided by the next wave of men—some of whom were, incredibly, still yipping or bellowing full-throated battle cries. More horses and riders were driven into the green shimmer, which accepted them eagerly. Latigo, standing stunned and bleeding like a man in the middle of a stampede (which was exactly what he was), saw the soldier to whom he had given his gun. This fellow, who had obeyed Latigo’s order and shot one of his compadres in order to awaken the rest of them, threw himself from his saddle, howling, and crawled back from the edge of the green stuff even as his horse plunged in. He tried to get to his feet, saw two riders bearing down on him, and clapped his hands across his face. A moment later he was ridden down.