I prowled perhaps two hundred yards behind Perona. He was using a tiny hand-flash now; it bobbed and winked in the darkness ahead, vanishing sometimes when a curve in the path hid him, or when he plunged down into a gully and up again. I had no search-beam. Nor would I have dared use one: Perona could too obviously have seen that someone was following him.
There was half a mile of this, I think, though it seemed interminable. I could hear the sea, rising with the wind, pounding against the rocks to my left. Then, a distance ahead, I saw lights moving. Perona's—and others. Three or four of them. Their combined glow made a radiance which illumined the path and rocks. I could see the figures of several men whom Perona had joined. They stood a moment and then moved off. To the right a ragged cliff wall towered the path. The spots of light bobbed toward it. I caught the vague outline of a huge broken opening, like a cave mouth in the cliff. The lights were swallowed by it.
I crept cautiously forward.
CHAPTER VI
Ether-wave Eavesdropping
I had thought it was a cavern mouth into which the men had disappeared, but it was not. I reached it without any encounter. It loomed above me, a great archway in the cliff—an opening fifty feet high and equally as broad. And behind it was a roofless cave—a sort of irregularly circular bowl, five hundred feet across its broken, bowlder-strewn, caked-ooze floor.
I crouched in the blackness under the archway. The moon had risen and its light filtered with occasional shafts through the swift-flying black clouds overhead. The scene was brighter. It was dark in the archway, but a glow of moonlight in the bowl beyond showed me its tumbled floor and the precipitous, eroded walls, like a crater-rim, which encircled it.
The men whom Perona had met were across the bowl near its opposite side. I could see the group of them, five hundred feet from me, by a little moonlight that was on them; also by the sheen from the spots of their hand-lights. Four or five men, and Perona. I thought I distinguished the aged Minister sitting on a rock, and before him a huge giant man's figure striding up and down. Perona seemed talking vehemently: the men were listening; the giant paused occasionally in his pacing to fling a question.
All this I saw with my first swift glance. My attention was drawn from the men to an object near them. The nose of a flyer showed between two upstanding crags on the floor of the valley. Only its forward horizontal propellers and the tip of its cabin and landing gear were visible, but I could guess that it was a fair-sized ship.