About an hour after sunset they started, riding slowly and scouting carefully to see that none of the Cave Dwellers was on the watch. It was two days after full moon, and they had therefore as many hours to reach the foot of the cliff before it rose. An hour was more than sufficient to travel the distance. They therefore rested for a time, after darkness set in, before they started. Then they swam the river on horseback, and made their way noiselessly along, keeping at some distance from the river bank, until they reached the place where the cliff rose perpendicularly. They pressed on, keeping close to the base of the rocks, until they arrived at the place which Buffalo Bill had decided upon as the easiest at which to make the ascent. Then they lay down among the bowlders at the foot of the wall of rock, and remained there until the moon rose, for it was impossible to attempt such a difficult and dangerous climb in the darkness. While they waited they discussed the best way of getting the lariat rope up, for it was obvious that whether it was carried in a coil over the shoulder or wound around the body it would hamper the movements of the climber. At last Buffalo Bill solved the problem by putting a ball of twine in his pocket and saying that he would throw it down from the ledge when he got up, so that the lariat could be tied to it and then pulled up. “Good luck, pard!” said Wild Bill, as the border king prepared to start, and both he and Nick Wharton gripped their friend by the hand, while Eagle Eye laid his hand on his shoulder, saying: “Ugh, heap brave!” The ascent was comparatively easy for a short distance. Then Buffalo Bill came to the first of the ledges he had noticed. It was only about ten inches wide, but, keeping his face to the rocky wall, and using his hands to grip the most trifling irregularities in the smooth surface, or to get a hold in small crevices, he managed to make his way along until he arrived at a bulge in the wall which seemed to effectually bar further progress. Buffalo Bill drew his bowie knife, bent forward, and cut a hole in the rock just large enough to rest his feet in. Thus, gaining a step forward, he cut another foothold, and so went on until he had got round the projecting rock at a frightful risk, and gained a secure footing on the next ledge. But this ledge narrowed rapidly as he passed around it. He was now at one of the points which had appeared to him to be the most difficult, for, as he had looked up from the ground in the afternoon, the ledge seemed almost to cease, while the next one above it was also so narrow that he doubted whether he could obtain standing room upon it. The scout now made his way along on tiptoe, in imminent peril of falling down the face of the cliff with every step. In some places the ledge was not more than three inches wide.