But, he realized, he couldn't just stand there like a scared sheep. Whether Amra was right or not, whether they were within dagger's thrust or not, he had to take action. "Do your damndest!" he growled at whatever might be in the dark, and he struck steel against flint. The materials were under his coat, blocking his view, but he lay down again so he could see between his arms and under the coat held over them. The tinder caught at once and blazed up, then began a small but steady glow in the harder wood of the box. Without waiting to look around, Green rammed the flare's spike into the deck of the nest. Swiftly he brought the punk up, still holding the coat over it for protection from the drizzle and also from any watching eyes. He held it against the fuse, saw the cord catch flame and sizzle like a frying worm. Then he had ducked around the other side of the mast that supported the nest, for he knew how unpredictable these primitive rockets were. Like as not it would go off in his face. Hardly had he rounded the big pillar of the mast when he heard a soft whooshing sound. He looked up just in time to see the rocket explode in a white glare. The moment it dispelled the darkness he jerked his head to the right and the left in an effort to see if Ezkr and Grazoot were on him, as he'd _known_ they must be. But they weren't. They were still half a ship's length away from him, caught by the light in the rigging, like flies in a spider's web. What he had thought was a finger poking him in the back must have been the bolt that held the support for the muskets which were to be fired from the nest during combat. So relieved was he, he would have broken into loud laughter, but at that moment a great cry broke from the decks below. The mate and the helmsmen were shouting in alarm. Green looked down, saw them pointing, and his gaze followed the direction of their extended fingers. A hundred yards ahead, rushing at them on a collision course, was a towering clump of trees! 16 Then the flare had died and had left nothing but its after-image on the eye--and panic on the brain. Green did not know what to make of it. In the first instant he had thought that it was the 'roller alone that was speeding toward an uncharted forest-grown hill. Immediately after, he'd seen that his senses were deceiving him and that the mass was also moving. It had looked like a hill, or several hills, sliding across the grass toward them. But even as the darkness came back he'd seen that there were other hills behind it, and that the whole thing was actually a sort of iceberg of rocks and of soil from which grew trees. That was all he could make out in that confusing moment. Even then he couldn't believe it, because a mountain just didn't run along of its own volition on flat land.