The long corridor, through which they were proceeding, was lighted partially by small candles set in niches and by the light from illuminated chambers the doors of which opened upon it. Slaves and warriors moved in two continuous and opposing lines through this corridor and every one that crossed it. There were high caste slaves in white tunics with the red emblems of their owners and their own occupation insignia upon them; there were green-tunicked slaves of the second generation with their master's insignia upon breast and back in black, and green-tunicked slaves of the first generation with a black emblem upon their breasts denoting the city of their nativity and their master's emblem upon their backs; there were warriors of every rank and position; there were the plain leather trappings of the young and poor, and the jewel studded harness of the rich; and passing all these in both directions and often at high speed were other warriors mounted upon the mighty antelopes that were still the greatest wonder that had confronted Tarzan since his incarceration in the city of Veltopismakus. At intervals along the corridor Tarzan saw ladders extending to a floor above, but as he never saw one descending to a lower level he assumed that they were then upon the lowest floor of the structure. From the construction that he noted he was convinced that the building was similar to the dome he had seen in the course of construction in the city of Adendrohahkis; but when he permitted his mind to dwell upon the tremendous proportions of such a dome capable of housing men of his own size he was staggered. Had Adendrohahkis' dome been duplicated in these greater dimensions, though in the same proportions, it would have been eight hundred eighty feet in diameter and four hundred forty feet high. It seemed preposterous to think that any race existed capable of accomplishing such an architectural feat with only the primitive means that these people might be able to command, yet here were the corridors with the arched roofs, the walls of neatly laid bowlders and the great chambers with their heavy ceiling beams and stout columns, all exactly as he had seen the dome in Trohanadalmakus, but on a vastly larger scale. As his eyes and mind dwelt upon these enigmas which confronted them his escort led him from the circular corridor into one that ran at right angles to it where presently they stopped at the entrance to a chamber filled with row upon row of shelving packed full with all manner of manufactured articles. There were large candles and small candles, candles of every conceivable size and shape; there were helmets, belts, sandals, tunics, bowls, jars, vases and the thousand other articles of the daily life of the Minunians with which Tarzan had become more or less familiar during his sojourn among the Trohanadalmakusians.