Fifteen hours later the _Swift Arrow_ withdrew to the open waters to the south as the sun slowly fell below the horizon. The four adventurers gathered around the chart table and studied the island of Shan, comparing notes. Zircon used a pair of dividers as a pointer. "This cove on the eastern shore looks like the best possibility for anchoring the vinta, and I'd say the climb up the volcano from there is no harder than from any other place." Rick agreed. "It looked that way to me, too. We'll call that cove our back door. The only real puzzle is, does the volcano have a crater? If so, we'll have to go around it. Climbing down into the crater and up again would use up too much time." Zircon shrugged. "We have no way of telling. Did anyone notice a preferred way around the cone?" "The southern slope looks a little less steep," Scotty volunteered. Chahda nodded agreement. "I also think this. To me, big trouble is place right above cliff. Is pretty steep, I think." The Hindu boy was right as usual, Rick thought. He had seen through the long glass that the area above the steep cliff was only slightly less vertical than the cliff itself, with an occasional shelf of rock. Not only would that be the hardest part of the trip, he guessed, but the most dangerous, since they would be in sight of the village part of the time. "It's steep," Scotty agreed. "I'd say it's not a place to pick for a casual stroll, but I can't think of any other way to get our friends off that shelf. Can you?" The others shook their heads. They had discussed it at length during the daylight hours while they floated patiently in the waters south of Shan, alternately sleeping and preparing for the night's work. Since no other plan seemed even remotely feasible, Rick and Scotty were to make the first try in about two hours. The time passed swiftly with last-minute preparations. The boys carried rope, heavy spikes to be used as pitons on particularly difficult places, flashlights taped so only a pinpoint of light could emerge, cans of water from the emergency rations, work gloves from the clothing locker, and candy bars for quick-energy rations. In addition, Rick had Zircon's pistol, a takedown fishing rod, with reel and line, a radio unit, and the long glass. Scotty had his rifle, a small first-aid kit, and a wooden caulking mallet. The two boys were having a last cup of coffee when Chahda came down from the upper deck. "Is time," the Hindu boy told them. "We two miles east of Shan. Good wind. You make good time going in, not so good coming back." The boys finished their coffee and went on deck. The four shook hands all around, and Zircon cautioned, "Give yourselves plenty of time for the return trip. Remember that if you're late, you'll have to hide on the volcano all day!" CHAPTER XVI The Black Cliff