The place was about a five days’ march to the south, near the region of great mounds. These mounds had something to do with the evil world down there — they were probably ancient closed-up passages to it, for once the Old Ones below had had colonies on the surface and had traded with men everywhere, even in the lands that had sunk under the big waters. It was when those lands had sunk that the Old Ones closed themselves up below and refused to deal with surface people. The refugees from the sinking places had told them that the gods of outer earth were against men, and that no men could survive on the outer earth unless they were daemons in league with the evil gods. That is why they shut out all surface folk, and did fearful things to any who ventured down where they dwelt. There had been sentries once at the various openings, but after ages they were no longer needed. Not many people cared to talk about the hidden Old Ones, and the legends about them would probably have died out but for certain ghostly reminders of their presence now and then. It seemed that the infinite ancientness of these creatures had brought them strangely near to the borderline of spirit, so that their ghostly emanations were more commonly frequent and vivid. Accordingly the region of the great mounds was often convulsed with spectral nocturnal battles reflecting those which had been fought in the days before the openings were closed.
The Old Ones themselves were half-ghost — indeed, it was said that they no longer grew old or reproduced their kind, but flickered eternally in a state between flesh and spirit. The change was not complete, though, for they had to breathe. It was because the underground world needed air that the openings in the deep valleys were not blocked up as the mound-openings on the plains had been. These openings, Charging Buffalo added, were probably based on natural fissures in the earth. It was whispered that the Old Ones had come down from the stars to the world when it was very young, and had gone inside to build their cities of solid gold because the surface was not then fit to live on. They were the ancestors of all men, yet none could guess from what star — or what place beyond the stars — they came. Their hidden cities were still full of gold and silver, but men had better let them alone unless protected by very strong magic.
They had frightful beasts with a faint strain of human blood, on which they rode, and which they employed for other purposes. The things, so people hinted, were carnivorous, and like their masters, preferred human flesh; so that although the Old Ones themselves did not breed, they had a sort of half-human slave-class which also served to nourish the human and animal population. This had been very oddly recruited, and was supplemented by a second slave-class of reanimated corpses. The Old Ones knew how to make a corpse into an automaton which would last almost indefinitely and perform any sort of work when directed by streams of thought. Charging Buffalo said that the people had all come to talk by means of thought only; speech having been found crude and needless, except for religious devotions and emotional expression, as aeons of discovery and study rolled by. They worshipped Yig, the great father of serpents, and Tulu, the octopus-headed entity that had brought them down from the stars; appeasing both of these hideous monstrosities by means of human sacrifices offered up in a very curious manner which Charging Buffalo did not care to describe.
Zamacona was held spellbound by the Indian’s tale, and at once resolved to accept his guidance to the cryptic doorway in the ravine. He did not believe the accounts of strange ways attributed by legend to the hidden people, for the experiences of the party had been such as to disillusion one regarding native myths of unknown lands; but he did feel that some sufficiently marvellous field of riches and adventure must indeed lie beyond the weirdly carved passages in the earth. At first he thought of persuading Charging Buffalo to tell his story to Coronado — offering to shield him against any effects of the leader’s testy scepticism — but later he decided that a lone adventure would be better. If he had no aid, he would not have to share anything he found; but might perhaps become a great discoverer and owner of fabulous riches. Success would make him a greater figure than Coronado himself — perhaps a greater figure than anyone else in New Spain, including even the mighty viceroy Don Antonio de Mendoza.
On October 7, 1541, at an hour close to midnight, Zamacona stole out of the Spanish camp near the grass-house village and met Charging Buffalo for the long southward journey. He travelled as lightly as possible, and did not wear his heavy helmet and breastplate. Of the details of the trip the manuscript told very little, but Zamacona records his arrival at the great ravine on October 13th. The descent of the thickly wooded slope took no great time; and though the Indian had trouble in locating the shrubbery-hidden stone door again amidst the twilight of that deep gorge, the place was finally found. It was a very small aperture as doorways go, formed of monolithic sandstone jambs and lintel, and bearing signs of nearly effaced and now undecipherable carvings. Its height was perhaps seven feet, and its width not more than four. There were drilled places in the jambs which argued the bygone presence of a hinged door or gate, but all other traces of such a thing had long since vanished.