“Same here,” agreed Stanley. “For a minute I was thunderstruck. I could not even think straight.”

They hurried from the cavern and began a systematic exploration of the numerous openings that led to subterranean chambers in the mountainside. Some were so dark that they had to make constant use of their flash-lights in finding their way about. Others were illuminated by shafts of daylight that entered through crevices overhead. Most of the caves bore no evidence of ever having been occupied; others had evidently been used as lairs by curious wild beasts of a bygone age, and their bones, mingled with those of the creatures on which they had preyed, strewed the earthen floor.

At last they came to the cave where Timichi had pointed out to them the rows of his silent subjects. They had avoided this place until the last, because they did not want to look upon the rows of dead. Now, as they had half expected, they found the remains of Timichi, dressed in his gorgeous finery, and sitting on a stone with his head resting against the wall, as if surveying his little kingdom of the departed. It was weird and pathetic and they did not stay long.

As for the gold, it had not been found. It had disappeared as completely as if the rumbling craters had opened and engulfed it with their fiery mouths.

“It’s the most mysterious thing I ever heard of. There were tons of it, and it does not seem possible that Timichi could have carried it away at all.”

“I’ll bet he didn’t. Some one else has been here since we left. Let’s look around,” Ted replied.

The underground river occurred to them first of all. It was by this means that they had made their escape during their previous visit to the dismal place, just as it seemed they were condemned to a living death in company with the demented Timichi.

When, after a tedious journey along the murky margin of the lagoon, they finally reached the mouth of the subterranean stream, they found the entrance blocked by a mass of stones. Nor was the barrier the result of a landslide, as they had supposed when they tried to force their way through from the other side; the stones had been placed there by human hands. Some one had indeed anticipated their return and had tried to forestall them in every way.

Then they returned to the cave in which the gold had been concealed and carefully looked around for traces or clews of the one who had removed the treasure, and after a lengthy search their efforts were rewarded. A faint trail led from the entrance toward the great wall. They followed the indistinct path, breathless with anticipation; it ran straight to the point where the wall joined the abrupt mountainside. And there, under the massive structure, a hole had been dug large enough for men to pass freely to and fro. The gold had been carried back into the Hidden Valley.

“Quizquiz!” both shouted in one breath. “It was he. No one else would have thought of it or had the cunning to put through such an undertaking.”