This is a particularly mysterious Random Mine, because I can't find it in the Cornwall and Scilly Historic Environment Record.
There are a couple of shafts and an adit recorded quite a way further down the hill near Latcheyplain ford, but nothing at quite this location. I briefly played with the idea that I had rediscovered it, perhaps because the heavy rain had caused a fall that had unblocked it, but I don't think that can be the case really because it has a hosepipe in it. OK, the hosepipe could have washed down from some shaft further up, but I think the likeliest explanation is that the map pin has got misplaced in the HER database and that someone has found the adit a handy way of supplying water to the field nearby.
Although if that is the case, it's a bit odd there isn't a gate over it. Most of the adits are gated to stop tourists wandering into them and being
The adit is probably nearest to Wheal Benny mine, which was recorded as active in 1884, working tin, arsenic and wolfram with the help of a waterwheel. Wheal Benny was blessed with what is termed 'an extensive arsenic labyrinth and flue' as well as 4 buddles for black tin preparation.