"It's so," someone exclaimed. "Now we may locate it."
Jim moved from one point to another of observation. Finally he came to a pile of stones, something like a surveyor's monument, only it was about ten feet high. This he climbed.
No sooner had he taken his position on top of the cairn, for such it seemed to be, than he gave a yell of exultation.
"I see it, boys. There's the sign as big as life."
We were upon top of the cairn in a moment, that is to say, Tom and I were, but Juarez would not come up.
"No, no," he said, shaking his head. "I take your word, Jim, but I will not step up there."
"All right, my boy. I won't urge you," said Jim good naturedly. He seemed to understand Juarez.
We followed the pointing of Jim's hand and saw the ancient symbol [Symbol -O] about seventy feet below the old woman, upon the surface of a rock that curved out.
"That must be twelve feet across," said Jim, "in both directions."
"How do you suppose it was done?" I asked.