One trail led into the cave straitly, with regular five-toed prints, except where the track swerved from the impetuous and uneven trail of a galloping otter. Three rootlets of sea-thrift were dropped on the spurred sand. The strait trail led on; the other turned back to the wetted grey pebbles, where lay crab-shells, corks, fish-tails, and a piece of glass.
The man followed the strait tracks into the cave, into twilight, clambering over ice-cold rocks, and shining a light on the pools wherein drops glistened and struck loud in the stillness. He moved slowly, with glances over his shoulder at the diminishing circle of daylight. The roof of the cave was red and brown with the iron in the rock. Sometimes his foothold wobbled on a stone that in the motion of tides had worn a cup for itself. A hundred yards from its mouth the cave turned to the left, shutting darkness and sea-whispers together. The man went on, bending down to find his way by the light he carried. The pools became shallower, without life or weed; the roof lower and dry. A wailing cry ran along the walls. Holding the electric torch before him, he saw four pricks of light that moved, vanished, and appeared again, one pair above the other. The wail went past him again, like the cry of a hungry infant. On the grey boulder at his feet the wan light showed a black mark, as of tar on bitten fish-bones—the spraints of an otter.
In five minutes he had walked another fifty yards into the cave. The pale yellow eyes shifted noiselessly in front of him. The toe of his boot kicked something that clattered on the stones.
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