There, some few hundred yards distant, on a promontory, stood a red horse.

"It's Wildfire!" breathed Slone, tensely.

He could not believe his sight. He imagined he was dreaming. But as Nagger stamped and snorted defiance Slone looked with fixed and keen gaze, and knew that beautiful picture was no lie.

Wildfire was as red as fire. His long mane, wild in the wind, was like a whipping, black-streaked flame. Silhouetted there against that canon background he seemed gigantic, a demon horse, ready to plunge into fiery depths. He was looking back over his shoulder, his head very high, and every line of him was instinct with wildness. Again he sent out that shrill, air-splitting whistle. Slone understood it to be a clarion call to Nagger. If Nagger had been alone Wildfire would have killed him. The red stallion was a killer of horses. All over the Utah ranges he had left the trail of a murderer. Nagger understood this, too, for he whistled back in rage and terror. It took an iron arm to hold him. Then Wildfire plunged, apparently down, and vanished from Slone's sight.

Slone hurried onward, to be blocked by a huge crack in the rocky plateau. This he had to head. And then another and like obstacle checked his haste to reach that promontory. He was forced to go more slowly.

Wildfire had been close only as to sight. And this was the great canon that dwarfed distance and magnified proximity. Climbing down and up, toiling on, he at last learned patience. He had seen Wildfire at close range. That was enough. So he plodded on, once more returning to careful regard of Nagger. It took an hour of work to reach the point where Wildfire had disappeared.

A promontory indeed it was, overhanging a valley a thousand feet below.

A white torrent of a stream wound through it. There were lines of green cottonwoods following the winding course. Then Slone saw Wildfire slowly crossing the flat toward the stream. He had gone down that cliff, which to Slone looked perpendicular.

Wildfire appeared to be walking lame. Slone, making sure of this, suffered a pang. Then, when the significance of such lameness dawned upon him he whooped his wild joy and waved his hat. The red stallion must have heard, for he looked up. Then he went on again and waded into the stream, where he drank long. When he started to cross, the swift current drove him back in several places. The water wreathed white around him. But evidently it was not deep, and finally he crossed. From the other side he looked up again at Nagger and Slone, and, going on, he soon was out of sight in the cottonwoods.

"How to get down!" muttered Slone.

There was a break in the cliff wall, a bare stone slant where horses had gone down and come up. That was enough for Slone to know. He would have attempted the descent if he were sure no other horse but Wildfire had ever gone down there. But Slone's hair began to rise stiff on his head.

A horse like Wildfire, and mountain sheep and Indian ponies, were all very different from Nagger. The chances were against Nagger.

"Come on, old boy. If I can do it, you can," he said.

Slone had never seen a trail as perilous as this. He was afraid for his horse. A slip there meant death. The way Nagger trembled in every muscle showed his feelings. But he never flinched. He would follow Slone anywhere, providing Slone rode him or led him. And here, as riding was impossible, Slone went before. If the horse slipped there would be a double tragedy, for Nagger would knock his master off the cliff. Slone set his teeth and stepped down. He did not let Nagger see his fear. He was taking the greatest risk he had ever run.

The break in the wall led to a ledge, and the ledge dropped from step to step, and these had bare, slippery slants between. Nagger was splendid on a bad trail. He had methods peculiar to his huge build and great weight. He crashed down over the stone steps, both front hoofs at once.

The slants he slid down on his haunches with his forelegs stiff and the iron shoes sc.r.a.ping. He snorted and heaved and grew wet with sweat. He tossed his head at some of the places. But he never hesitated and it was impossible for him to go slowly. Whenever Slone came to corrugated stretches in the trail he felt grateful. But these were few. The rock was like smooth red iron. Slone had never seen such hard rock. It took him long to realize that it was marble. His heart seemed a tense, painful knot in his breast, as if it could not beat, holding back in the strained suspense. But Nagger never jerked on the bridle. He never faltered. Many times he slipped, often with both front feet, but never with all four feet. So he did not fall. And the red wall began to loom above Sloan. Then suddenly he seemed brought to a point where it was impossible to descend. It was a round bulge, slanting fearfully, with only a few rough surfaces to hold a foot. Wildfire had left a broad, clear-swept mark at that place, and red hairs on some of the sharp points. He had slid down. Below was an offset that fortunately prevented further sliding. Slone started to walk down this place, but when Nagger began to slide Slone had to let go the bridle and jump. Both he and the horse landed safely. Luck was with them. And they went on, down and down, to reach the base of the great wall, sc.r.a.ped and exhausted, wet with sweat, but unhurt. As Slone gazed upward he felt the impossibility of believing what he knew to be true. He hugged and petted the horse.

Then he led on to the roaring stream.

It was green water white with foam. Slone waded in and found the water cool and shallow and very swift. He had to hold to Nagger to keep from being swept downstream. They crossed in safety. There in the sand showed Wildfire's tracks. And here were signs of another Indian camp, half a year old.

The shade of the cotton woods was pleasant. Slone found this valley oppressively hot. There was no wind and the sand blistered his feet through his boots. Wildfire held to the Indian trail that had guided him down into this wilderness of worn rock. And that trail crossed the stream at every turn of the twisting, narrow valley. Slone enjoyed getting into the water. He hung his gun over the pommel and let the water roll him. A dozen times he and Nagger forded the rushing torrent.

Then they came to a boxlike closing of the valley to canon walls, and here the trail evidently followed the stream bed. There was no other way. Slone waded in, and stumbled, rolled, and floated ahead of the st.u.r.dy horse. Nagger was wet to his breast, but he did not fall. This gulch seemed full of a hollow rushing roar. It opened out into a wide valley. And Wildfire's tracks took to the left side and began to climb the slope.

Here the traveling was good, considering what had been pa.s.sed. Once up out of the valley floor Slone saw Wildfire far ahead, high on the slope.

He did not appear to be limping, but he was not going fast. Slone watched as he climbed. What and where would be the end of this chase?

Sometimes Wildfire was plain in his sight for a moment, but usually he was hidden by rocks. The slope was one great talus, a jumble of weathered rock, fallen from what appeared a mountain of red and yellow wall. Here the heat of the sun fell upon him like fire. The rocks were so hot Slone could not touch them with bare hand. The close of the afternoon was approaching, and this slope was interminably long. Still, it was not steep, and the trail was good.

At last from the height of slope Wildfire appeared, looking back and down. Then he was gone. Slone plodded upward. Long before he reached that summit he heard the dull rumble of the river. It grew to be a roar, yet it seemed distant. Would the great desert river stop Wildfire in his flight? Slone doubted it. He surmounted the ridge, to find the canon opening in a tremendous gap, and to see down, far down, a glittering, sun-blasted slope merging into a deep, black gulch where a red river swept and chafed and roared.

Somehow the river was what he had expected to see. A force that had cut and ground this canon could have been nothing but a river like that. The trail led down, and Slone had no doubt that it crossed the river and led up out of the canon. He wanted to stay there and gaze endlessly and listen. At length he began the descent. As he proceeded it seemed that the roar of the river lessened. He could not understand why this was so.

It took half an hour to reach the last level, a ghastly, black, and iron-ribbed canon bed, with the river splitting it. He had not had a glimpse of Wildfire on this side of the divide, but he found his tracks, and they led down off the last level, through a notch in the black bank of marble to a sand bar and the river.

Wildfire had walked straight off the sand into the water. Slone studied the river and sh.o.r.e. The water ran slow, heavily, in sluggish eddies.

From far up the canon came the roar of a rapid, and from below the roar of another, heavier and closer. The river appeared tremendous, in ways Slone felt rather than realized, yet it was not swift. Studying the black, rough wall of rock above him, he saw marks where the river had been sixty feet higher than where he stood on the sand. It was low, then. How lucky for him that he had gotten there before flood season! He believed Wildfire had crossed easily, and he knew Nagger could make it.

Then he piled and tied his supplies and weapons high on the saddle, to keep them dry, and looked for a place to take to the water.

Wildfire had sunk deep before reaching the edge. Manifestly he had lunged the last few feet. Slone found a better place, and waded in, urging Nagger. The big horse plunged, almost going under, and began to swim. Slone kept upstream beside him. He found, presently, that the water was thick and made him tired, so it was necessary to grasp a stirrup and be towed. The river appeared only a few hundred feet wide, but probably it was wider than it looked. Nagger labored heavily near the opposite sh.o.r.e; still, he landed safely upon a rocky bank. There were patches of sand in which Wildfire's tracks showed so fresh that the water had not yet dried out of them.

Slone rested his horse before attempting to climb out of that split in the rock. However, Wildfire had found an easy ascent. On this side of the canon the bare rock did not predominate. A clear trail led up a dusty, gravelly slope, upon which scant greasewood and cactus appeared.

Half an hour's climbing brought Slone to where he could see that he was entering a vast valley, sloping up and narrowing to a notch in the dark cliffs, above which towered the great red wall and about that the slopes of cedar and the yellow rim rock.

And scarcely a mile distant, bright in the westering sunlight, shone the red stallion, moving slowly.

Slone pressed on steadily. Just before dark he came to an ideal spot to camp. The valley had closed up, so that the lofty walls cast shadows that met. A clump of cottonwoods surrounding a spring, abundance of rich gra.s.s, willows and flowers lining the banks, formed an oasis in the bare valley. Slone was tired out from the day of ceaseless toil down and up, and he could scarcely keep his eyes open. But he tried to stay awake.

The dead silence of the valley, the dry fragrance, the dreaming walls, the advent of night low down, when up on the ramparts the last red rays of the sun lingered, the strange loneliness--these were sweet and comforting to him.

And that night's sleep was as a moment. He opened his eyes to see the crags and towers and peaks and domes, and the lofty walls of that vast, broken chaos of canons across the river. They were now emerging from the misty gray of dawn, growing pink and lilac and purple under the rising sun.

He arose and set about his few tasks, which, being soon finished, allowed him an early start.

Wildfire had grazed along no more than a mile in the lead. Slone looked eagerly up the narrowing canon, but he was not rewarded by a sight of the stallion. As he progressed up a gradually ascending trail he became aware of the fact that the notch he had long looked up to was where the great red walls closed in and almost met. And the trail zigzagged up this narrow vent, so steep that only a few steps could be taken without rest. Slone toiled up for an hour--an age--till he was wet, burning, choked, with a great weight on his chest. Yet still he was only halfway up that awful break between the walls. Sometimes he could have tossed a stone down upon a part of the trail, only a few rods below, yet many, many weary steps of actual toil. As he got farther up the notch widened.

What had been scarcely visible from the valley below was now colossal in actual dimensions. The trail was like a twisted mile of thread between two bulging mountain walls leaning their ledges and fronts over this tilted pa.s.s.

Slone rested often. Nagger appreciated this and heaved gratefully at every halt. In this monotonous toil Slone forgot the zest of his pursuit. And when Nagger suddenly snorted in fright Slone was not prepared for what he saw.

Above him ran a low, red wall, around which evidently the trail led. At the curve, which was a promontory, scarcely a hundred feet in an air line above him, he saw something red moving, bobbing, coming out into view. It was a horse.

Wildfire--no farther away than the length of three la.s.sos!

There he stood looking down. He fulfilled all of Slone's dreams. Only he was bigger. But he was so magnificently proportioned that he did not seem heavy. His coat was s.h.a.ggy and red. It was not glossy. The color was what made him shine. His mane was like a crest, mounting, then falling low. Slone had never seen so much muscle on a horse. Yet his outline was graceful, beautiful. The head was indeed that of the wildest of all wild creatures--a stallion born wild--and it was beautiful, savage, splendid, everything but n.o.ble. Slone thought that if a horse could express hate, surely Wildfire did then. It was certain that he did express curiosity and fury.

Slone shook a gantleted fist at the stallion, as if the horse were human. That was a natural action for a rider of his kind. Wildfire turned away, showed bright against the dark background, and then disappeared.

III

That was the last Slone saw of Wildfire for three days.

It took all of this day to climb out of the canon. The second was a slow march of thirty miles into a scrub cedar and pinon forest, through which the great red and yellow walls of the canon could be seen. That night Slone found a water hole in a rocky pocket and a little gra.s.s for Nagger. The third day's travel consisted of forty miles or more through level pine forest, dry and odorous, but lacking the freshness and beauty of the forest on the north side of the canon. On this south side a strange feature was that all the water, when there was any, ran away from the rim. Slone camped this night at a muddy pond in the woods, where Wildfire's tracks showed plainly.

On the following day Slone rode out of the forest into a country of scanty cedars, bleached and stunted, and out of this to the edge of a plateau, from which the shimmering desert flung its vast and desolate distances, forbidding and menacing. This was not the desert upland country of Utah, but a naked and bony world of colored rock and sand--a painted desert of heat and wind and flying sand and waterless wastes and barren ranges. But it did not daunt Slone. For far down on the bare, billowing ridges moved a red speck, at a snail's pace, a slowly moving dot of color which was Wildfire.

On open ground like this, Nagger, carrying two hundred and fifty pounds, showed his wonderful quality. He did not mind the heat nor the sand nor the glare nor the distance nor his burden. He did not tire. He was an engine of tremendous power.

Slone gained upon Wildfire, and toward evening of that day he reached to within half a mile of the stallion. And he chose to keep that far behind. That night he camped where there was dry gra.s.s, but no water.

Next day he followed Wildfire down and down, over the endless swell of rolling red ridges, bare of all but bleached white gra.s.s and meager greasewood, always descending in the face of that painted desert of bold and ragged steppes. Slone made fifty miles that day, and gained the valley bed, where a slender stream ran thin and spread over a wide sandy bottom. It was salty water, but it was welcome to both man and beast.

The following day he crossed, and the tracks of Wildfire were still wet on the sand bars. The stallion was slowing down. Slone saw him, limping along, not far in advance. There was a ten-mile stretch of level ground, blown hard as rock, from which the sustenance had been bleached, for not a spear of gra.s.s grew there. And following that was a tortuous pa.s.sage through a weird region of clay dunes, blue and violet and heliotrope and lavender, all worn smooth by rain and wind. Wildfire favored the soft ground now. He had deviated from his straight course. And he was partial to washes and dips in the earth where water might have lodged. And he was not now scornful of a green-sc.u.mmed water hole with its white margin of alkali. That night Slone made camp with Wildfire in plain sight. The stallion stopped when his pursuers stopped. And he began to graze on the same stretch with Nagger. How strange this seemed to Slone!

Here at this camp was evidence of Indians. Wildfire had swung round to the north in his course. Like any pursued wild animal, he had begun to circle. And he had pointed his nose toward the Utah he had left.

Next morning Wildfire was not in sight, but he had left his tracks in the sand. Slone trailed him with Nagger at a trot. Toward the head of this sandy flat Slone came upon old cornfields, and a broken dam where the water had been stored, and well-defined trails leading away to the right. Somewhere over there in the desert lived Indians. At this point Wildfire abandoned the trail he had followed for many days and cut out more to the north. It took all the morning hours to climb three great steppes and benches that led up to the summit of a mesa, vast in extent.

It turned out to be a sandy waste. The wind rose and everywhere were moving sheets of sand, and in the distance circular yellow dust devils, rising high like water spouts, and back down in the sun-scorched valley a sandstorm moved along majestically, burying the desert in its yellow pall.