In reality, Mr. Hampton was beginning to be filled with dark forebodings, as successive developments impressed him more and more with the power of this unknown race. But he did not want Jack to experience any fear, and spoke in a tone of conviction which he was far from feeling.

The progress through the tunnel seemed interminable, especially inasmuch as they were blindfolded, while their captors, they knew, bore lighted torches. But long as was the journey, they at length emerged from the tunnel and into another fortress. That such was the case, they could tell from the difference in the atmosphere. Their blindfolds, however, were not removed, nor were the lashings binding their hands behind them.

They were halted in a great room, while around them was a buzz of voices.

“When are they going to take off these blinkers?” Bob muttered.

“I imagine, Bob,” said Mr. Hampton, who overheard, “that we will be led elsewhere before the blindfolds are removed. They will want to hide from us the secret of the exit through the tunnel. Once we are in the city, we shall be as if sealed up.”

Such, indeed, proved to be the case. From the guardhouse, they were taken out into the open air. They could feel the hot sun beating upon them. For a considerable distance they were marched through the streets of the city. They could hear the exclamations of the populace, as they passed along, in the midst of their guards, and they had the feeling several times of crossing great open squares.

No demonstrations occurred, and at length they were led up several flights of stairs, in through a great gateway where soldiers evidently were stationed, as challenges were given and answered in the Inca tongue, across a stone-flagged courtyard, and into a building.

Here at length the blindfolds were removed, their wrists untied, and they could look about at their surroundings. They were in a lofty-ceiled room, walls and roof of which were of stone. The room was of great size, and there were scores of soldiery scattered about, mending tunics, polishing arms, or gossiping. It was the great assembly hall of a fortress. Had they known, this was at the exit of the tunnel, and the tour through the city had been made to confuse them.

Prince Huaca approached, and addressed himself as before to Don Ernesto, whom he evidently took to be the leader of the expedition.

“Senor,” said he, “you are now in the central fortress of the city. You will be given quarters and food. Tomorrow I shall call upon you, and explain. Until then you will consider yourselves prisoners, but, as you are under my protection, no harm need be feared.”