Ariel thought her parent and his little company would simply keep guard at the entrance of the cavern, in order to intercept them, if they discovered some way of re-crossing the chasm and attempted to leave.

But both were wrong.

The young man was resolved that no march should be stolen upon him.  It was impossible for the Murhapas to pass far enough around to leave the place, without being seen, provided he kept unremitting watch, which he felt competent to do for a number of hours to come.

If the siege was prolonged, he could take turns with Ariel, whose bright eyes were quicker of perception than his.

In the cavern of diamonds, there was no means of telling when it was day or night on the earth outside.  Lit by the eternal fires of the volcano, it was always day; but he carried a watch, which told him that the night was far advanced, and that the bright sun would soon shine upon mountain, forest, and river again, though his heart sank at the faint prospect of it ever being his privilege to greet the orb again.

The incidents of the next hour mystified both Ashman and Ariel.

The first movement which attracted their notice, was Ziffak, who, rising to the upright posture, so that his immense shoulders were in plain sight, was seen picking his way along the ledge, until he reached the opening on the other side.  Through this he passed and was seen no more.

It was useless to speculate as to the meaning of this proceeding, which could not be explained until made clear by occurrences themselves.  It was safe to assume, however, that it was ostensibly in the interests of King Haffgo, and therefore against those of the fugitive lovers.

Probably a half-hour after the disappearance of the chieftain, two of the party were seen stealing along the ledge in the direction of the entrance to the cavern.  These, however, were of such slight stature, when compared with Ziffak, and they made such efforts to conceal their movements, that it was hard to follow or identify them.  Ashman thought that Haffgo was one of the number, but he could not make certain, and, since Ariel did not catch as favoring a glimpse as he, she could give no help in solving the question.

The best solution of the singular acts was that while the Murhapas seemed to try to hide themselves from the lovers, they still took pains to allow enough to be disclosed to reveal the movements, which they wished the couple to observe.

And here again, both Ashman and Ariel were in error.

Strange that a possibility which had once been thought of by the two did not occur again to them.

King Haffgo, despite his confidence in Ziffak, began to feel some distrust of him.  His refusal to attempt the leap of the chasm, and his former friendship for the explorers, might have been reasonably explained, but his failure to drive his javelin through the white man, who was so near and who never stirred from his position, could not be an accident.  He knew the marvellous skill of the head chieftain, who could have had but one cause for missing Ashman:  that was an intentional deviation of his weapon, which, slight though it was, proved as effective as if hurled in the opposite direction.