"Fall up, of course," flung back the guide. "You said this was mountain climbing backwards. It'll be that way going back," chuckled the guide.

"And I so delicate!" muttered the lad, gazing up the hundreds of feet of almost sheer precipice. But ere the Pony Rider Boys scaled those rocks again they would pass through some experiences that were far from pleasurable ones.

CHAPTER IX

CHUNKY WANTS TO GO HOME

Instead of a half hour, as had been prophesied, a full hour elapsed before they reached the bottom of the trail that was practically no trail at all. Tad was sure that the guide couldn't find his way back over the same ground, or rather rock, to save his life, for the boy could find nothing that looked as if the foot of man had ever trodden upon it before. He doubted if any one had been over that particular trail from the Garden on.

As a matter of fact, Dad had led them into new fields. But at last they stood upon the surer foundation of the bottom of the chasm.

"Anyone needs to be a mountain goat to take that journey," said Tad, with a laugh.

"No, a bird would be better," piped Stacy.

"I'd rather be a bug, then I wouldn't have to climb," spoke up Walter.

"Hurrah! Walt's said something," shouted Ned.