Search Kids Discover

Serious Salt Mine

  • September 10, 2013
  • By KIDS DISCOVER

Pakistan’s Khewra salt mine is home to the world’s only post office made of salt bricks (the workers use it). The world’s second largest salt mine, it produces a pinkish product known as Himalayan salt and was discovered around 320 BC by Alexander the Great’s troops.

About the author

Kids Discover For over 25 years, we’ve been creating beautifully crafted nonfiction products for kids. With a specialty in science and social studies, our team of talented writers, award-winning designers and illustrators, and subject-experts from leading institutions is committed to a single mission: to get children excited about reading and learning.