At last he bethought himself of the Rackbirds' vessel.

He remembered that Maka had told him that provisions were brought to them by a vessel, and there was every reason to suppose that when these miscreants went on some of their marauding expeditions they travelled by sea.

Day by day he had thought that he would go and visit the Rackbirds' storehouse and the neighborhood thereabout, but day by day he had been afraid that in his absence Rynders might arrive, and when he came he wanted to be there to meet him.
But now the idea of the boat made him brave this possible contingency, and early one morning, with Cheditafa and two other of the black fellows, he set off along the beach for the mouth of the little stream which, rising somewhere in the mountains, ran down to the cavern where it had once widened and deepened into a lake, and then through the ravine of the Rackbirds on to the sea.

When he reached his destination, Captain Horn saw a great deal to interest him.
Just beyond the second ridge of rock which Maka had discovered, the stream ran into a little bay, and the shores near its mouth showed evident signs that they had recently been washed by a flood.

On points of rock and against the sides of the sand mounds, he saw bits of debris from the Rackbirds' camp.