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Devin is a renowned spa and holiday resort.
It is situated amid scenic hills in the heart of the Rhodopes at
an altitude of 710 - 780 m. In early antiquity the place was
inhabited by the Thracian tribe of the Bessi, and later by the
Romans. Devin has several mineral water springs with a
temperature between 37 and 44C. The water is clear, colourless,
palatable, odourless, hyper- and homeo-thermal, mildly
mineralized, and contains hydrocarbonates of sodium and small
quantities of fluorine. It has a strong alkaline reaction (pH
9.4). The total usable flow is 1,800 l/min. The curative
properties of Devin's mineral waters are due to their
considerable mineralization, the relatively high content of
metasilicic acid and fluorine, mild acidity and high temperature |