"Now we must keep a sharp lookout for marks on the hills," Dave said; "we know we are about right as to the line, but we may have to go two or three miles north or as much south before we get a mark just bearing on that middle peak. Stop," he broke off suddenly; "look up there just beyond the shoulder of that hill; there are some wigwams, sure enough."
Tom brought his telescope to bear.
"Yes, there are about twenty of them, but they never can see us at this distance."
"Don't you make any mistake, young fellow; there aint no saying what an Indian can see and what he can't see. I reckon their eyes is as good as that glass of yours, and I would not guarantee they could not see a rabbit run at this distance. There, get among those rocks at the foot of the cliff; we will make our way along them, hiding as much as we can. I suppose those are horses away there on the hillside to the right of the village; they can't be nothing else."
"Yes, they are horses, Dave."
For another half hour they made their way among the rocks, and then Dick exclaimed suddenly:
"Look, Dave, there is a tree standing by itself at the top of that hill. I believe in another fifty yards it will just be on the line of the peaks."
"I think you are right, Dick, and we have hit the very point at the first try; if it is right, there must be a break in this wall above us."
Chapter IX.—The Tree On The Peak.
They hastened on now with their eyes fixed on the tree. A minute later an exclamation broke from Dave, who was ahead, and the others on joining him saw that the great wall of rock had been split as if by an earthquake. The opening was not more than ten yards wide, and on looking up a narrow line of sky appeared between the walls of rock. Looking the other way, they saw that the tree on the hill bore exactly on the middle peak, the Indian village lying just in the same line halfway up the hill.