In article , Steve Barker wrote:

my father in law certainly did NOT know where the 1" iron line a quarter
mile long from the spring up ontop the hill was when he had that old man
come out and 'witch' it for him. dug down to the line the first time.

There are multiple plausible explanations for that:
a) the old man who 'witched' the line is the same guy that *installed* the
line forty years before
b) dumb luck
c) get anywhere close and dig a big enough hole, and you're bound to hit it
d) somebody's lying

The fact is that when "dowsing" is tested under controlled conditions, NOBODY
has EVER demonstrated success at any rate greater than that expected by blind
chance.

If you think you can do it, go get your million dollars.