Men-An-Tol Holed Stone
The other three stones are more regular granite pillars commonly used in stone circles, with one dressed flat side. There is speculation that these were simply four of the stones of an ancient circle, further large stones having been discovered lying just below the ground nearby. Another theory is that these stones once formed a chamber tomb, a hole of some form apparently being quite commonly used in fertility rituals involving the passing out of exhumed bones from the tomb
In all cases, passing through the hole was central to the healing process with importance being attached to the direction, the number of times (commonly 3 or 9) and the point on the lunar cycle. With its obvious feminine symbolism, the holed stone was also believed to aid fertility and its powers were sought by barren women, pregnant women seeking easy childbirth and famers seeking bountiful crops.