The boys seized each others' hands and fled, with many tumblings and bruises, to the shelter of a great oak that stood upon the riverbank. Now the battle was at its highest. Under the ceaseless conflagration of lightning that flamed in the skies, everything below stood out in cleancut and shadowless distinctness: the bending trees, the billowy river, white with foam, the driving spray of spumeflakes, the dim outlines of the high bluffs on the other side, glimpsed through the drifting cloudrack and the slanting veil of rain. Every little while some giant tree yielded the fight and fell crashing through the younger growth; and the unflagging thunderpeals came now in ear-splitting explosive bursts, keen and sharp, and unspeakably appalling. The storm culminated in one matchless effort that seemed likely to tear the island to pieces, burn it up, drown it to the treetops, blow it away, and deafen every creature in it, all at one and the same moment. It was a wild night for homeless young heads to be out in. But at last the battle was done, and the forces retired with weaker and weaker threatenings and grumblings, and peace resumed her sway. The boys went back to camp, a good deal awed; but they found there was still something to be thankful for, because the great sycamore, the shelter of their beds, was a ruin, now, blasted by the lightnings, and they were not under it when the catastrophe happened. Everything in camp was drenched, the campfire as well; for they were but heedless lads, like their generation, and had made no provision against rain. Here was matter for dismay, for they were soaked through and chilled.