Salar de Uyuni (or Salar de Tunupa) is the world`s largest salt flat at 10,582 square kilometers (4,086 sq mi). It is located in the Potosí and Oruro departments in southwest Bolivia, near the crest of the Andes, and is elevated 3,656 meters (11,995 ft) above the mean sea level. The Salar was formed as a result of transformations between several prehistoric lakes. It is covered by a few meters of salt crust, which has an extraordinary flatness with the average altitude variations within one meter over the entire area of the Salar. The crust serves as a source of salt and covers a pool of brine, which is exceptionally rich in lithium. It contains 50 to 70% of the world`s lithium reserves, which is in the process of being extracted. The large area, clear skies and exceptional surface flatness make the Salar an ideal object for calibrating the altimeters of the Earth observation satellites. The Salar serves as the major transport route across the Bolivian Altiplano and is a major breeding ground for several species of pink flamingos.
Cheap Flights to St.Petersburg, RussiaSt. Petersburg is the place miracles are made. Today, Russia’s second largest city is known for its stunning tsarist architecture, fashionable restaurants, shopping and electric nightlife, all set along the beautiful Neva River. But St. Petersburg is also the site of some of the most pivotal moments in Russia's history, most notably the Siege of Leningrad.
One of the most awesome spectacles you can see once you've stepped off a flight to St. Petersburg are the “white nights” that occur in the city in the summer. Find cheap flights to St. Petersburg in June and July and watch in awe as the city glows from the prolonged twilight. The sun never drops far enough below the horizon to create the usual nighttime darkness, so the city is constantly lit up under the miraculous white light.
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