"Because it has been declared taboo, off limits, by the priests of Estorya. It was done so long ago that I imagine that the priests themselves have forgotten why they forbade its access to men. But it's not hard to reconstruct the historical causes. Once, I suppose, the island was populated by cannibals. At the time the Estoryans captured the island they exterminated the aborigines. They found the cave mouth was a holy place for the savages. So, thinking that it held demons--and it does, in a way--they built a wall around it and set up a statue of the Fish Goddess, facing inward and holding in her hand a symbol to restrain the imprisoned fiends from breaking loose. That symbol, of course, is the same charm that is sold on the streets of Estorya, that circumscribes the country and the island of Shimdoog. It is the same as the spaceship that landed near the King's palace." Green hailed a rickshaw and continued his account while they rode through the still-crowded streets. There was so much noise that he felt quite safe talking, provided he kept his voice soft. By the time they had reached the northern end of the windbreak, Green had told the boy all he thought he should hear at that time. If, later on, his trip to Shimdoog proved successful he would enlighten him even more. For the present he was concerned with the problem of getting transportation. Fortunately they found almost at once a nice little yacht with speedy lines and a tall mast. The craft must have belonged to a wealthy man, for a watchman sat close to it before a little fire just outside his shed. Green walked up to him, and when the fellow rose, his hand suspiciously resting upon his spear, Green struck him on the jaw, then followed with a hard right to the pit of his stomach. Grizquetr completed the job by hitting him over the head with a length of pipe he'd picked up off the ground. Green emptied the handbag of the watchman and was pleased to see several coins of respectable denominations. "Probably his life-savings," he said. "I hate to rob him, but we have to have money. Grizquetr, do you remember those slaves who were drinking and gambling outside the Striped Ape Inn? Run to them and offer them six _danken_ if they'll tow us out of the 'break. Tell them we're paying them so much because it's so late at night, and also to keep their mouths shut." Grinning, the boy ran off. Green hauled the limp body of the unconscious watchman behind the hut, bound and gagged him and threw a tarpaulin over him. Grizquetr returned, leading six noisy and reeling men, sturdily built, with legs and backs big-muscled from hauling 'rollers. At first Green thought he ought to try to make them keep quiet, then decided that it would look more natural if he let them talk as loudly as they wished. There was a festive air over the city tonight, and more than one yacht was going out for a moonlight cruise.