[Avodah] mikva shitos

[Arie Folger]

R' Zev Sero wrote:
> In Europe until the 19th century there was almost no such
> thing as a rain-water mikveh.  Everyone knew that one can
> also make a mikveh from mei geshomim, but nobody did so.

So RAM asked:
> So then how *were* their mikvaos filled? Did they dig deep
> wells? Did they fill it with snow and ice in the winter? Did they
> only use lakes?

The 900 year old miqwe of Worms, in Germany (where Rashi went to
yeshiva), is filled with ground water, which is why it is so deep in
the ground: water seeps in from the Rhine.
-- 
Arie Folger,
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