Siwa, Egypt/egypt200

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Siwa is important to science because its Temple of Amun (Ammon) lent its name to sal ammoniac (ammonium chloride), and consequently ammonia. This is the modern city of Siwa; the Temple of Amun is 2 km to the right (east) out of view. The view is north. Image provided by the kind courtesy of Vyacheslav Argenberg, © VascoPlanet, http://www.vascoplanet.com/.