On Sun, 6 Jul 2003 14:16:44 +0000 (UTC), "Hal"
wrote:

I was going to make one with concrete and blocks but had the following
thought.
Why not do away with the concrete.

No experience here, but wouldn't you be worried about a garden mole
that found some material in its burrow that it was able to dig
through?

Obviously the poor old mole might drown (and be poisoned) in its
attempts to dig into your swimming pool. But you've still got a
half-empty swimming pool and a waterlogged garden to sort out.

Andrew

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