All now stood at the bottom of a deep canyon, with walls of nearly perpendicular rock rising on both sides from five hundred to a thousand feet above their heads. The bottom was strewn with rocks of all shapes and sizes, and little clumps of trees and bushes grew here and there.
"This," and Dickson glanced a bit dramatically around him, "is Lot's Canyon. The white pillar of rock, called Lot's Wife on the map, is about a couple of miles farther up the canyon, and near it stands the Big Tree, and close by that tree, according to the map, should be the hidden entrance to Crooked Arm Gulch. And it must be well-hidden too; for, when I was with Stackpole, we couldn't find a sign of a gulch near the Big Tree, although I remember we looked especially sharp for it right there, because the Indian had told Stackpole that it was near a big tree and that was the biggest tree we could find in the canyon. I hope we have better luck."
"Let us hurry and get to the Big Tree," cried Thure impatiently. "I am sure that, if there is any entrance to any gulch there, some of us can find it. Come on," and the excited boy, with Bud by his side, started up the canyon.
Rex and Dill and Mr. Dickson at once joined the two boys, and the five hurried eagerly forward, leaving the others to come on more slowly with Pedro and the horses.
The canyon was from one hundred to two hundred feet wide at the bottom, and twisted and wound along between its gigantic walls of rock, like a huge serpent. Doubtless in some far distant age it had been the course of a mighty river; but now not a drop of water flowed along its rocky bottom and evidently had not for hundreds of years.
"Looks like a mighty good place for grizzlies," commented Rex, as they hurried along over the rough rocks of the bottom.
"And there has been one here not many minutes ago," supplemented Dill, pointing to the bark of a tree that had been freshly torn by the sharp claws of some powerful animal.
"And there he is!" cried Thure, as they made a sudden turn around a huge point of rocks, projecting a few feet out into the canyon, and came face to face with a huge male grizzly not a hundred feet away.
The grizzly appeared to be very greatly astonished at this sudden invasion of man into his hitherto undisputed realm of rocks, and a little offended. With a deep bass-drum-like "huff, huff," he reared his huge body up on his hind legs, and, turning his wicked little eyes on them, uttered a deep warning growl, as much as to say: "Now, if you men will turn right around and go back, I will not harm you."
"Shall we shoot?" asked Thure, cocking his rifle.