They found it easy to clamber down the heap of crushed rock to the floor of the canyon, and also to pass along the bottom at the edge of the small stream of water which flowed toward the south. The water had cut a passage under a ledge at the south, and now flowed eastward, toward the plain.

Following steadily on, now stooping under natural bridges in the rock, now wading through cuts which the water covered, and which must have been roaring torrents during time of storm, the boys finally came to a little shelf looking east from which the renegade and some of his companions could plainly be seen.

"Fremont is not so very far away now," Jack said, "and we ought to swarm down there and take him back with us. We ought to take the big lobster Jimmie seems to have on his mind back with us, too!" he added.

Nestor shook his head, for, much as he desired to hasten the hour of Fremont's release, he saw that an attempt at rescue now would be dangerous. It was certain that the outlaws, not suspecting that they had been trailed over the mountain by the tireless Boy Scouts, would be off guard at night.

"Of course we want to capture that big lobster," Jimmie said. "We want to know why he was so anxious for Nestor's society!"

"I think that question can easily be answered now," Nestor said, but he did not answer it.

Leaving the view of the spot where Fremont was a captive reluctantly, the boys went back to the gold chamber by the series of canyons by which they had left it. It was not an easy journey, for there were places where strength and skill were required, but at last they drew themselves up the chute by means of the rope, after which they again fell to investigating the provision boxes which the newcomers had brought in.

By the time they had finished a second tolerably satisfactory repast, it began to grow dark, although the sun was still an hour from setting. Black masses of clouds were forming, and now and then flashes of lightning, darting from cloud to cloud, and from cloud-mass to earth, cut the gathering darkness.

Then a drenching rain-storm came on, and Nestor believed that the time for the attack on the captors of his friend had arrived. In the darkness and storm the outlaws would not be expecting danger. The wind almost flung the boys from their feet when they came to open shelves of rock on their way to the plain below, but they kept steadily on their course.