Template:POTD protected/2008-03-12
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Tufa towers in Mono Lake, California. Tufa are spires and knobs made of calcium carbonate formed by interaction of freshwater springs and alkaline lake water. Tufa can reach heights of 30 ft (9 m). Photo credit: Mila Zinkova Recently featured: Parthenon – Diffusion tensor imaging – Kamianets-Podilskyi map |
