Brill nodded abstractedly, hardly heeding. Of all the continent of North America there is no section so haunted by tales of lost or hidden treasure as is the Southwest. Uncounted wealth passed back and forth over the hills and plains of Texas and New Mexico in the old days when Spain owned the gold and silver mines of the New World and controlled the rich fur trade of the West, and echoes of that wealth linger on in tales of golden caches. Some such vagrant dream, born of failure and pressing poverty, rose in Brill's mind.
Aloud he spoke: "Well, anyway, I got nothin' else to do and I believe I'll dig into that old mound and see what I can find."
The effect of that simple statement on Lopez was nothing short of shocking. He recoiled and his swarthy brown face went ashy; his black eyes flared and he threw up his arms in a gesture of intense expostulation.
"Dios, no!" he cried. "Don't do that, Senor Brill! There is a curse —my grandfather told me—"
"Told you what?" asked Brill.
Lopez lapsed into sullen silence.
"I cannot speak," he muttered. "I am sworn to silence. Only to an eldest son could I open my heart. But believe me when I say better had you cut your throat than to break into that accursed mound."
"Well," said Brill, impatient of Mexican superstitions, "if it's so bad why don't you tell me about it? Gimme a logical reason for not bustin' into it."
"I cannot speak!" cried the Mexican desperately. "I know!—but I swore to silence on the Holy Crucifix, just as every man of my family has sworn. It is a thing so dark, it is to risk damnation even to speak of it! Were I to tell you, I would blast the soul from your body. But I have sworn—and I have no son, so my lips are sealed forever."
"Aw, well," said Brill sarcastically, "why don't you write it out?"
Lopez started, stared, and to Steve's surprise, caught at the suggestion.
"I will! Dios be thanked the good priest taught me to write when I was a child. My oath said nothing of writing. I only swore not to speak. I will write out the whole thing for you, if you will swear not to speak of it afterward, and to destroy the paper as soon as you have read it.
"Sure," said Brill, to humor him, and the old Mexican seemed much relieved.
"Bueno! I will go at once and write. Tomorrow as I go to work I will bring you the paper and you will understand why no one must open that accursed mound!"
And Lopez hurried along his homeward path, his stooped shoulders swaying with the effort of his unwonted haste. Steve grinned after him, shrugged his shoulders and turned back toward his own shack. Then he halted, gazing back at the low rounded mound with its grass-grown sides. It must be an Indian tomb, he decided, what with its symmetry and its similarity to other Indian mounds he had seen. He scowled as he tried to figure out the seeming connection between the mysterious knoll and the martial ancestor of Juan Lopez.
Brill gazed after the receding figure of the old Mexican. A shallow valley, cut by a half-dry creek, bordered with trees and underbrush, lay between Brill's pasture and the low sloping hill beyond which lay Lopez's shack. Among the trees along the creek bank the old Mexican was disappearing. And Brill came to a sudden decision.
Hurrying up the slight slope, he took a pick and a shovel from the tool shed built onto the back of his shack. The sun had not yet set and Brill believed he could open the mound deep enough to determine its nature before dark. If not, he could work by lantern light. Steve, like most of his breed, lived mostly by impulse, and his present urge was to tear into that mysterious hillock and find what, if anything, was concealed therein. The thought of treasure came again to his mind, piqued by the evasive attitude of Lopez.
What if, after all, that grassy heap of brown earth hid riches—virgin ore from forgotten mines, or the minted coinage of old Spain? Was it not possible that the musketeers of de Estrada had themselves reared that pile above a treasure they could not bear away, molding it in the likeness of an Indian mound to fool seekers? Did old Lopez know that? It would not be strange if, knowing of treasure there, the old Mexican refrained from disturbing it. Ridden with grisly superstitious fears, he might well live out a life of barren toil rather than risk the wrath of lurking ghosts or devils—for the Mexicans say that hidden gold is always accursed, and surely there was supposed to be some especial doom resting on this mound. Well, Brill meditated, Latin-Indian devils had no terrors for the Anglo-Saxon, tormented by the demons of drouth and storm and crop failure.
Steve set to work with the savage energy characteristic of his breed. The task was no light one; the soil, baked by the fierce sun, was iron-hard, and mixed with rocks and pebbles. Brill sweated profusely and grunted with his efforts, but the fire of the treasure-hunter was on him. He shook the sweat out of his eyes and drove in the pick with mighty strokes that ripped and crumbled the close-packed dirt.
The sun went down, and in the long dreamy summer twilight he worked on, almost oblivious of time or space. He began to be convinced that the mound was a genuine Indian tomb, as he found traces of charcoal in the soil. The ancient people which reared these sepulchers had kept fires burning upon them for days, at some point in the building. All the mounds Steve had ever opened had contained a solid stratum of charcoal a short distance below the surface: But the charcoal traces he found now were scattered about through the soil.
His idea of a Spanish-built treasure trove faded, but he persisted. Who knows? Perhaps that strange folk men now called Mound-Builders had treasure of their own which they laid away with the dead.
Then Steve yelped in exultation as his pick rang on a bit of metal. He snatched it up and held it close to his eyes, straining in the waning, light. It was caked and corroded with rust, worn almost paper-thin, but he knew it for what it was—a spur-rowel, unmistakably Spanish with its long cruel points. And he halted, completely bewildered. No Spaniard ever reared this mound, with its undeniable marks of aboriginal workmanship. Yet how came that relic of Spanish caballeros hidden deep in the packed soil?
Brill shook his head and set to work again. He knew that in the center of the mound, if it were indeed an aboriginal tomb, he would find a narrow chamber built of heavy stones, containing the bones of the chief for whom the mound had been reared and the victims sacrificed above it. And in the gathering darkness he felt his pick strike heavily against something granite-like and unyielding. Examination, by sense of feel as well as by sight, proved it to be a solid block of stone, roughly hewn. Doubtless it formed one of the ends of the deathchamber. Useless to try to shatter it. Brill chipped and pecked about it, scrapping the dirt and pebbles away from the corners until he felt that wrenching it out would be but a matter of sinking the pick-point underneath and levering it out.
But now he was suddenly aware that darkness had come on. In the young moon objects were dim and shadowy. His mustang nickered in the corral whence came the comfortable crunch of tired beasts' jaws on corn. A whippoorwill called eerily from the dark shadows of the narrow winding creek. Brill straightened reluctantly. Better get a lantern and continue his explorations by its light.
He felt in his pocket with some idea of wrenching out the stone and exploring the cavity by the aid of matches. Then he stiffened. Was it. imagination that he heard a faint sinister rustling, which seemed to come from behind the blocking stone? Snakes! Doubtless they had holes somewhere about the base of the mound and there might be a dozen big diamond-backed rattlers coiled up in that cave-like interior waiting for him to put his hand among them. He shivered slightly at the thought and backed away out of the excavation he had made.
It wouldn't do to go poking about blindly into holes. And for the past few minutes, he realized, he had been aware of a faint foul odor exuding from interstices about the blocking stone—though he admitted that the smell suggested reptiles no more than it did any other menacing scent. It had a charnel-house reek about it—gases formed in the chamber of death, no doubt, and dangerous to the living.
Steve laid down his pick and returned to the house, impatient of the necessary delay. Entering the dark building, he struck a. match and located his kerosene lantern hanging on its nail on the wall. Shaking it, he satisfied himself that it was nearly full of coal oil, and lighted it. Then he fared forth