The ravine made an abrupt turn to the west, and high up on its side they saw their three companions with the five horses climbing up the precipitous rocks.

"How ever did they get up there?" Jerry exclaimed.

"Found Indian trail," the chief said. "Let my brothers keep their eyes open."

They rode on slowly now, examining every foot of the steep hillside. Presently Hunting Dog, who was ahead, uttered an exclamation. Between two great boulders there was a track, evidently a good deal used.

"Let Hunting Dog go first," the chief said. "Leaping Horse will follow the white men."

"I reckon that this is the great Indian trail over the pass," Jerry said to Tom, who preceded him. "I have heard there ain't no way over the mountains atween that pass by Fremont's Buttes and the pass by this peak, which they calls Union Peak, and the red-skins must travel by this when they go down to hunt buffalo on the Green River. It is a wonder Harry struck on it."

"Leaping Horse told him to keep his eyes open," the chief said from the rear. "He knew that Indian trail led up this valley."