At Ijo I saw a pit-trap for wolves. It was dug down into a little hill a short distance from the farm and they had lined it all round with unsplit fence-posts, upright and joined together. There was a pole in the centre and, like those around it, its top came to ground level. On the pole was a wheel and on the wheel were boards that covered it completely but did not project at all. If the wolf jumps up to the wheel, it is unable to move in any direction.