Nor were the open spaces between these rocky mounds less remarkable. In one valley, the course of a river which vanished ages ago, the power of fire had left its monuments amid those of the power of water. The sedimentary rock of sandstone, shales, and marl, not only showed veins of ignitible lignite, but it was pierced by the trap which had been shot up from earth's flaming recesses. Dikes of this volcanic stone crossed each other or ran in long parallels, presenting forms of fortifications, walls of buildings, ruined lines of aqueducts. The sandstone and marl had been worn away by the departed river, and by the delicately sweeping, incessant, tireless wings of the afreets of the air, leaving the iron-like trap in bold projection.
Some of these dikes stretched long distances, with a nearly uniform height of four or five feet, closely resembling old field-walls of the solidest masonry. Others, not so extensive, but higher and pierced with holes, seemed to be fragments of ruined edifices, with broken windows and shattered portals. As the trap is columnar, and the columns are horizontal in their direction, the joints of the polygons show along the surface of the ramparts, causing them to look like the work of Cyclopean builders. The Indians and Mexicans of the expedition, deceived by the similarity between these freaks of creation and the results of human workmanship, repeatedly called out, "Casas Grandes! Casas de Montezuma!"
It would seem, indeed, as if the ancient peoples of this country, in order to arrive at the idea of a large architecture, had only to copy the grotesque rock-work of nature. Who knows but that such might have been the germinal idea of their constructions? Mrs. Stanley was quite sure of it. In fact, she was disposed to maintain that the trap walls were really human masonry, and the production of Montezuma, or of the Amazons invented by Coronado.
"Those four-sided and six-sided stones look altogether too regular to be accidental," was her conclusion. Notwithstanding her belief in a superintending Deity, she had an idea that much of this world was made by hazard, or perhaps by the Old Harry.
In one valley the ancient demon of water-force had excelled himself in enchantments. The slopes of the alluvial soil were dotted with little buttes of mingled sandstone and shale, varying from five to twenty feet in height, many of them bearing a grotesque likeness to artificial objects. There were columns, there were haystacks, there were enormous bells, there were inverted jars, there were junk bottles, there were rustic seats. Most of these fantastic figures were surmounted by a flat capital, the remnant of a layer of stone harder than the rest of the mass, and therefore less worn by the water erosion.
One fragment looked like a monstrous gymnastic club standing upright, with a broad button to secure the grip. Another was a mighty centre-table, fit for the halls of the Scandinavian gods, consisting of a solid prop or pedestal twelve feet high, swelling out at the top into a leaf fifteen feet across. Another was a stone hat, standing on its crown, with a brim two yards in diameter. Occasionally there was a figure which had lost its capital, and so looked like a broken pillar, a sugar loaf, a pear. Imbedded in these grotesques of sandstone were fossils of wood, of fresh-water shells, and of fishes.
It was a land of extravagances and of wonders. The marvellous adventures of the "Arabian Nights" would have seemed natural in it. It reminded you after a vague fashion of the scenery suggested to the imagination by some of its details or those of the "Pilgrim's Progress." Sindbad the Sailor carrying the Old Man of the Sea; Giant Despair scowling from a make-believe window in a fictitious castle of eroded sandstone; a roc with wings eighty feet long, poising on a giddy pinnacle to pounce upon an elephant; pilgrim Christian advancing with sword and buckler against a demon guarding some rocky portal, would have excited no astonishment here.
Of a sudden there came an adventure which gave opening for knight-errantry. As Thurstane, Coronado, and Texas Smith were riding a few hundred yards ahead of the caravan, and just emerging from what seemed an enormous court or public square, surrounded by ruined edifices of gigantic magnitude, they discovered a man running toward them in a style which reminded the Lieutenant of Timorous and Mistrust flying from the lions. Impossible to see what he was afraid of; there was a broad, yellow plain, dotted with monuments of sandstone; no living thing visible but this man running.
He was an American; at least he had the clothes of one. As he approached, he appeared to be a lean, lank, narrow-shouldered, yellow-faced, yellow-haired creature, such as you might expect to find on Cape Cod or thereabouts. Hollow-chested as he was, he had a yell in him which was quite surprising. From the time that he sighted the three horsemen he kept up a steady screech until he was safe under their noses. Then he fell flat and gasped for nearly a minute without speaking. His first words were, "That's pooty good sailin' for a man who ain't used to't."
"Did you run all the way from Down East?" asked Thurstane.