Sunil, my dad has offered and may be out there now. I figure, it could still be 2' under, so wait till she stabilizes, then rains to raise it over the leak, and then to look(and listen) around the edges. That will narrow the search down quite a bit.
I could get several friends to help. The most likely technique may require that I hire a swimming pool company to come and use some of their leak detection equipment.
We have both Cumerland Caverns and Mammoth Cave, in the regions. Those are two of the largest caves in North America.
I was banking on doing everything right, from the beginning, to hedge my bets on the 50/50 odds that it would leak. Guess I lost.
