Brine pit

a salt spring or well, from which water is taken to be boiled or evaporated for making salt.

See also: Brine

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
* Brine Pit Pipes: After more than a decade, inspection revealed no corrosion (even on bolt threads) on pipes treated with CleanWirx.
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Originally salt was extracted from the ground by a series of natural brine pits.
Mine owners plan for future with new dome
Yet although "vast sums of money" was spent on sinking brine pits and erecting a salt works, the business, on the banks of the Worcester and Birmingham Canal, had proved to be a poisoned chalice.
Salt king shook up business
But in the park there is a stone statue of St Richard of Chichester, who was born in Droitwich and according to legend blessed one of the brine pits when it ran dry.
Town's salty heritage that is cast in stone
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