Have laid traps and sonic repellants. The latter are guaranteed not to work, but they were given to me, and I'm not going to look a gift horse in the mouth. Not sure what a gift horse is, but there you go... Current distance from closest detectable burrow to pond liner - 10 metres. If it gets through the liner, the only satisfaction I shall receive from having to repair it again is the knowledge that the mole will have been engulfed in the burrowing equivalent of a tidal wave...
While mapping the burrows (with a 6ft iron rod that I had for other reasons), I discovered a 'hole' in the garden that goes down about 5 ft. Not sure what's down there. Could be skeletons, or a septic tank, or both. Once the mole's gone to that great burrow in the sky, I shall map out the hole. If it's too big, I may need to open it up and fill it (the lawn is sinking a little where I found it). With hindsight, it would have been useful to find this hole before digging the pond at another spot in the garden. But another hole would be useful - I recall that the Italian post office, many years ago, were over-burdened with postcards that needed delivering. So instead, they buried them (perhaps they burned them, but the idea is the same). Am considering doing the same with all those journal submissions...
