Evaporation of sea water in salt pans, Museo de la Sal (Salt Museum), Las Salinas del Carmen, Fuerteventura, Canary Islands, Spain, Atlantic, Europe

Man collecting salt, Salir de Uyuni, salt flats, Bolivia, South America

Salar de Uyuni is the largest salt flat in the world and is in South West Bolivia, Bolivia, South America

Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Isla de los Pescadores and salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Details of the salt deposits in the Salar de Uyuni salt flat and the Andes mountains in the distance in south-western Bolivia, Bolivia, South America

Man collecting salt, Salir de Uyuni, salt flats, Bolivia, South America

Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cactus arrow on Isla de los Pescadores and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores and salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cactus arrow on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Details of the salt deposits in the Salar de Uyuni salt flat, southwestern Bolivia, Bolivia, South America

Cacti on Isla de los Pescadores and the salt flats of Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores and the salt flats of Salar de Uyuni, Southwest Highlands, Bolivia, South America

Salar de Uyuni salt flats and the Andes mountains in the distance, Bolivia, South America

Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores, Volcan Tunupa and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores and salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores and the salt flats of Salar de Uyuni, Southwest Highlands, Bolivia, South America

A 4x4 on Salar de Uyuni, the largest salt flat in the world, South West Bolivia, Bolivia, South America

Cacti on Isla de los Pescadores and the salt flats of Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti on Isla de los Pescadores and the salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Llama and alpaca on salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

Cacti at sunset on Isla de los Pescadores and salt flats, Salar de Uyuni, Southwest Highlands, Bolivia, South America

A 4x4 on Salar de Uyuni, the largest salt flat in the world, South West Bolivia, Bolivia, South America

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad

Ubinas volcano reflected in a pool at salt flats, Salinas y Aguada Blanca National Reserve, Arequipa Province, Arequipa Region, Peru, South America

Laguna Verde with mineral flat margin and Volcan Licancabur, 5960m, Southwest Highlands, Bolivia, South America

Wild vicunas on borax mineral flats, Laguna Verde, with mineral flat margin, Southwest Highlands, Bolivia, South America

Laguna Verde with mineral flat margin and Volcan Licancabur, 5960m, Southwest Highlands, Bolivia, South America

Grit salt remains the most commonly used method of removing ice and snow from the ground. All kinds of salt are effective at breaking up ice crystals, but grit salt is the preferred method for use in salt-spreading machines as long as the grit salt is kept dry. The grit salt also adds some friction to flat areas, making the ground better for tyres and shoes to grip on to.? . "

Grit salt remains the most commonly used method of removing ice and snow from the ground. All kinds of salt are effective at breaking up ice crystals, but grit salt is the preferred method for use in salt-spreading machines as long as the grit salt is kept dry. The grit salt also adds some friction to flat areas, making the ground better for tyres and shoes to grip on to.? . "

Hexagonal shapes, Salar de Uyuni salt flat, Altiplano, Ptosi Department, Bolivia, South America

Sulphur sediments in the thermal area of Dallol, Danakil-Senke, Ethiopia, Africa

Salt pan, salt crystals, sunrise in Badwater Basin above Panamint Range, Death Valley National Park, Mojave Desert, California, USA

Sulphur sediments in the thermal area of Dallol, Danakil-Senke, Ethiopia, Africa

Maras Salt Flats, Sacred Valley, Cuzco Province, Peru

Piles of salt dry in the arid atmosphere of Bolivia's Salar de Uyuni, Salar de Uyuni, Bolivia