As Mr. David Walter, of Pembrokeshire, 'a religious man, and far from fear and superstition,' was travelling by himself through a field called the Cot Moor, where there are two stones set up called the Devil's Nags, which are said to be haunted, he was suddenly seized and thrown over a hedge. He went there another day, taking with him for protection a strong fighting mastiff dog. When he had come near the Devil's Nags there appeared in his path the apparition of a dog more terrible than any he had ever seen. In vain he tried to set his mastiff on; the huge beast crouched frightened by his master's feet and refused to attack the spectre. Whereupon his master boldly stooped to pick up a stone, thinking that would frighten the evil dog; but suddenly a circle of fire surrounded it, which lighting up the gloom, showed the white snip down the dog's nose, and his grinning teeth, and white tail. 'He then knew it was one of the infernal dogs of hell.'[71]