The Garmsar Salt Cave features massive salt pillars that support its ceiling, formed and shaped by the Achaemenid Empire during salt extraction in 550–330 BC. Located in the Iranian county of the same name, the cave has 27 mines, and the one shown here is a popular tourist attraction. [1080×1080]

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      Iran is home to several significant salt mines, each with their own unique features and historical importance. The Garmsar Salt Mine has a history dating back over 2,500 years, with extraction noted since the Achaemenid era (550–330 BC). Its tunnels transformed a mountain into a cavernous wonder, with hand-hewn passages preserving its grandeur.

      Fun fact: There are salt domes in the country where the salt has pushed to the surface, because salt moves like a viscous liquid. There are also glaciers of salt moving downhill, exuding from the earth like toothpaste. Some of Iran’s salt mines are World Heritage Sites, recognized for their historical significance.

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