several hundred swinging, beehive huts, such as he had seen in the native village of the Gomangani. These he took to be the quarters of the black slaves, who performed all the arduous and menial labor connected with the palace.
The lofty granite wall which surrounded the entire enclosure was pierced by but a single gate which opened opposite the east end of the palace. This gate was large and of massive construction, appearing to have been built to withstand the assault of numerous and well-armed forces. So strong did it appear that the ape-man could not but harbor the opinion that it had been constructed to protect the interior against forces equipped with heavy battering rams. That such a force had ever existed within the vicinity in historic times seemed most unlikely, and Tarzan conjectured, therefore, that the wall and the gate were of almost unthinkable antiquity, dating, doubtless, from the forgotten age of the Atlantians, and constructed, perhaps, to protect the builders of the Palace of Diamonds from the well-armed forces that had come from Atlantis to work the gold mines of Opar and to colonize central Africa.
While the wall, the gate, and the palace itself, suggested in many ways almost unbelievable age, yet they were in such an excellent state of repair that it was evident that they were still inhabited by rational and intelligent creatures; while upon the south side Tarzan had seen a new tower in process of construction, where a number of blacks
