Peru & Machu Picchu
The Salt Terraces of Maras are an incredible sight. There are over 3000 small pools here. In the winter the pools are filled with water rich in calcium sulphate and carbonate to a depth of 6-8". After 2-3 weeks the water evaporates and the salt is raked into piles like the one in the center left. The white salt sells for $2 for 110 pounds.