> Whitewall sits on the flank of the most prominent
> peak of Destor's Hills,
> not on the top. There is a possibility that further
> up the hill there is a
> "natural cistern" gathering rain and condensation
> into some underground
> reservoir.
> We know that the hills at least around the city have
> white rock. This
> leaves us with possible white limestone or chalky
> rock (Dover, cliffs of
> Heortland), gypsum or alabaster, white feldspar, or
> quartzite. The
> whiteness of the mineral may vary, too.
Would any of these allow for underground rivers, and a tunnel system? My guess would be limestone?
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