What is Tufa Stone?
Tufa stone is a type of limestone which forms in close proximity to bodies of water with a high content of dissolved minerals, especially calcium carbonate. There are a number of uses for tufa, ranging from construction to artwork, and it is also interesting to view in situ. Tufa, incidentally, is not the same thing as tuff, a form of rock formed from volcanic ash, although the two rocks have many similar uses.
