For anchorage, the six-foot length of tree was dragged to the mouth of the tunnel and, five feet from the opening, wedged between the floor and roof of the tunnel, slightly inclined forward. The strain on the bottom would thus only fix the supporting section more firmly in place. From the bottom of the pine shaft a loop of four of the suspension cords reached just out of the tunnel opening. To this loop the top rang of the ladder was tied, with a separate hundred-foot length of cord. After the ladder had been made firm with a running slip knot the hundred-foot length of cord was dropped to the ground.
This arrangement had been provided in order that the rope ladder might be removed after the descent. By a jerk of the cord the slip knot would be loosened and the ladder, released, would fall of its own weight. Another length of rope had been prepared, this one somewhat over a hundred feet long and also doubled for strength. This was for the lowering of the packs and other articles by one of the boys after the other had descended. To insure its free running and to prevent its wearing through on the edge of the cliff, a six inch section of the pine tree had been prepared, flattened on one side and having a wide smooth groove in the top. This, attached to a short length of rope, which was made fast with the ladder loop to the upright shaft in the tunnel, was fixed on the verge of the opening.
Finally everything had been arranged and made fast. Each of the two boys insisted that he should go down first. To solve the dispute, they cast lots and the risk of testing the rope fell to Ned. Slipping off his shoes and socks, which he hung about his neck, he sprang to the ladder. Alan hung over the edge and watched him with apprehension, but Ned, feeling his way carefully, was soon on the ground.
His shout was the signal to begin the work of lowering the packs. And down they came, one after another; provisions, revolvers, blankets, water bottles, and even the money belt, for Ned had made himself as light as possible for his descent.
At last it was Alan's turn. The last load had descended, the lowering line had been released, drawn up and stowed away. The slip knot was examined anew and then Alan followed Ned down the slender, fragile swaying rope ladder. When he had reached the ground by Ned's side and the strain was over, the boys shook hands jubilantly.
"—And now," shouted Ned with a laugh, "last chance! If you want to go back for a new load say so before it is too late."
Alan, exhausted with the climb, shook his head.
"Then stand from under," cried Ned.
As he jerked the slip knot cord the boys sprang aside and the long ladder, wriggling, crashed at their feet.
The only means of reaching the towering elevation had been removed and the only visible sign of their brief occupancy of the secret mesa had been destroyed.