The reason why Columbus kept returning to the coast of Cuba was that he believed it to be the mainland of Asia. The unlettered natives, who had never read Marco Polo, told him that it was an island, although no man had ever seen the end of it; but Columbus did not believe them, and sailed westward in the belief that he would presently come upon the country and city of Cathay. Soon he found himself in the wonderful labyrinth of islets and sandbanks off the south coast; and because of the wonderful colours of their flowers and climbing plants he called them Jardin de la Reina or Queen's Garden. Dangerous as the navigation through these islands was, he preferred to risk the shoals and sandbanks rather than round them out at sea to the southward, for he believed them to be the islands which, according to Marco Polo, lay in masses along the coast of Cathay. In this adventure he had a very hard time of it; the lead had to be used all the time, the ships often had to be towed, the wind veered round from every quarter of the compass, and there were squalls and tempests, and currents that threatened to set them ashore. By great good fortune, however, they managed to get through the Archipelago without mishap. By June 3rd they were sailing along the coast again, and Columbus had some conversation with an old cacique who told him of a province called Mangon (or so Columbus understood him) that lay to the west. Sir John Mandeville had described the province of Mangi as being the richest in Cathay; and of course, thought the Admiral, this must be the place. He went westward past the Gulf of Xagua and got into the shallow sandy waters, now known as the Jardinillos Bank, where the sea was whitened with particles of sand. When he had got clear of this shoal water he stood across a broad bay towards a native settlement where he was able to take in yams, fruit, fish, and fresh water. But this excitement and hard work were telling on the Admiral, and when a native told him that there was a tribe close by with long tails, he believed him; and later, when one of his men, coming back from a shore expedition, reported that he had seen some figures in a forest wearing white robes, Columbus believed that they were the people with the tails, who wore a long garment to conceal them.