The legend of St. Collen, in which Gwyn ap Nudd figures, represents him as king of Annwn (hell, or the shadow land) as well as of the fairies.[6] Collen was passing a period of mortification as a hermit, in a cell under a rock on a mountain. There he one day overheard two men talking about Gwyn ap Nudd, and giving him this twofold kingly character. Collen cried out to the men to go away and hold their tongues, instead of talking about devils. For this Collen was rebuked, as the king of fairyland had an objection to such language. The saint was summoned to meet the king on the hill-top at noon, and after repeated refusals, he finally went there; but he carried a flask of holy water with him. 'And when he came there he saw the fairest castle he had ever beheld, and around it the best appointed troops, and numbers of minstrels and every kind of music of voice and string, and steeds with youths upon them, the comeliest in the world, and maidens of elegant aspect, sprightly, light of foot, of graceful apparel, and in the bloom of youth; and every magnificence becoming the court of a puissant sovereign. And he beheld a courteous man on the top of the castle who bade him enter, saying that the king was waiting for him to come to meat. And Collen went into the castle, and when he came there the king was sitting in a golden chair. And he welcomed Collen honourably, and desired him to eat, assuring him that besides what he saw, he should have the most luxurious of every dainty and delicacy that the mind could desire, and should be supplied with every drink and liquor that the heart could wish; and that there should be in readiness for him every luxury of courtesy and service, of banquet and of honourable entertainment, of rank and of presents, and every respect and welcome due to a man of his wisdom. "I will not eat the leaves of the trees," said Collen. "Didst thou ever see men of better equipment than these of red and blue?" asked the king. "Their equipment is good enough," said Collen, "for such equipment as it is." "What kind of equipment is that?" said the king. Then said Collen, "The red on the one part signifies burning, and the blue on the other signifies coldness." And with that Collen drew out his flask and threw the holy water on their heads, whereupon they vanished from his sight, so that there was neither castle nor troops, nor men, nor maidens, nor music, nor song, nor steeds, nor youths, nor banquet, nor the appearance of anything whatever but the green hillocks.'