What Biff had seen tumble into the gorge were the bulky packs that the porters had flung aside. Those bulging burdens, when falling, had looked exactly like a pair of huddled humans. Now, Uncle Charlie and the two boys were lightening weight by letting their own packs follow the path of the others.
That still didn't guarantee them safety. The whole weight of the bridge was now swaying on a single rope cable. Sooner or later it was sure to snap; then all hope of rescue would be gone. Now, chunks of the runway were breaking loose from the dangling ropes, which no longer bore their proportionate shares of the weight. That produced a new dilemma.
It was impossible for Uncle Charlie, Li, and Chuba to work their way along that upper edge, because of the gaps. They would have to reach the one remaining cable, climb it to the top of the tower post and come down to the ground. Li and Chuba might manage it; but not Charles Keene, with all his weight.
Chandra had the answer. He had brought along the rope from his log bridge. He tossed one end to Biff, saying, "Hang on tight!" Then, carrying the other end, Chandra scrambled up the lone cable and practically slid from the post top out to where Li and Chuba clung. There, Chandra, Li, and Chuba tied their rope end to the cable; while Biff, Mike, and Kamuka hauled the rope taut and hitched the other end around the tower post.
That filled the gaps along the level route to safety. Chandra went first, pausing to tie dangling liana strands to the new rope to keep it from sagging. Li and Chuba followed, stopping to wait for Charles Keene, even when he twisted one arm in the rope and waved them on with his other hand. If Biff's uncle tired, they hoped to help him; but what Uncle Charlie lacked in agility, he made up for in endurance.
After minutes that proved long and nerve-racking for Biff and his watching companions, the other boys reached solid ground with Charles Keene right behind them. A moment later, Biff and the rest were swarming around Uncle Charlie and congratulating him, while Barma Shah spoke approvingly.
"That was very good, indeed. And just in time, too. The wind is getting brisker from the gorge. What is left of the bridge will soon be gone."
At a combined order from Tikse and Hurdu, the bearers gathered their packs. Then they were on their way again. As they veered away from the gorge, Biff took a last look back. The remains of the bridge were swinging like a hammock now, its single strand due to snap at any moment.
Chandra, who was walking beside Biff, touched his arm. "The rope, Biff," he said in a low voice. "Somebody cut it!"
Biff stared at him. "Are you sure?" he gasped. When Chandra nodded, Biff said soberly, "Then that means there's an enemy right in our own party."