We are often asked to investigate underground holes for various people, 9 times out of 10 they turn out to be fairly mundane, with nothing of interest down them, but just occassionally ......
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While checking the depth of a small well, for a local landowner, which appeared to contain too much water! It was found that there was more too it than first thought!
A simple request to investigate a small deep hole unearthed by plumbers, lead to this amazing discovery.