This was an extensive trial by the Snailbeach Company. The drainage level is a water supply and should not be entered without prior permission from the farm. It goes in for about 50 yards to a fall.
The upper adit, after a fall 50 yards in, reaches the vein after 100 yards. It ends in a blind heading after a further 30 yards but there are crosscuts left and right at the vein. The right hand passage follows the vein for about 40 yards to a blind heading. After 20 yards, a crosscut to the left runs under a loose roof to a pool 15ft long and 17ft deep. On the other side of the pool the passage continues 10 yards to a winze and a blind heading. With the exception of the upper reaches of the left hand passage, the whole mine is under 3ft of water.