10. Salar de Uyuni
The largest salar (salt flat) in the world, Salar de Uyuni, is located within the Altiplano of Bolivia in South America. The Salar de Uyuni was once an inland sea, or giantsalt water lake, but the water vanished into the thin dry air of Andean altitude. The salt is over 10 meters thick in the center.
In the dry season, the salt planes are a completely flat expanse of dry salt, but in the wet season, it is covered with a thin sheet of water that is still drivable.
9. Enchanted Well
Located in the heart of Bahia, Chapada Diamantina is a landscape of mountains, large plateaus, rivers, rapids, waterfalls, caverns and transparent pools. Chapada Diamantina has so many attractions, it os hard to know where to start.
A good place would be the Enchanted Well, lit by direct sunlight between 10:30 - 12:30, allowing a breathtaking view down through 61 metres of turquoise blue water so clear that small stones can be seen at the bottom. Located in one of the many caverns in the area, it is the Chapada’s most famous postcard view.
8. The Valley of the Moon
Ischigualasto Provincial Park is located about 300 kilometers away from the capital of San Juan. It is better known as Valle de la Luna (Valley of the Moon). Erosion over the millennia unearths the fossils as well as other geological formations such as a host of almost spherical concretions.
The wind, inexorable and patient, has pounded the local bedrock for an age. Revealed, the boulders that mudstone – in its original wet form, helped to form look as if giants have been playing marbles.
7. Giant's Causeway
The Giant's Causeway lies at the foot of the basalt cliffs along the sea coast on the edge of the Antrim plateau in Northern Ireland. It is made up of some 40,000 massive black basalt columns sticking out of the sea. The dramatic sight has inspired legends of giants striding over the sea to Scotland.
Geological studies of these formations over the last 300 years have greatly contributed to the development of the earth sciences, and show that this striking landscape was caused by volcanic activity during the Tertiary, some 50–60 million years ago.
6. Kasha Katuwe Tent Rocks
Kasha-Katuwe Tent Rocks National, geologically unique group of rock formations located in the foothills of the Jemez Mountains, north-central New Mexico, U.S. The cone-shaped tent rock formations are the products of volcanic eruptions that occurred 6 to 7 million years ago and left pumice, ash and tuff deposits over 1,000 feet thick. This entire wonderland was carved over eons by the erosive power of wind, along with enough water to melt the Wicked Witch of the West a million times over.
5. Fly Geyser
Fly Geyser is a small geothermal geyser that is located approximately 20 miles north of Gerlach, in Washoe County, Nevada. The continuous Fly Geyser of Fly Ranch is on private land and began during 1916 water well drilling that accidentally penetrated a geothermal source. The geysers were all created accidently, while drilling wells in 1916! Then several decades later, in the 1960s, the water finaly found a week spot, and water and all the minerals started coming up to the surface!
4. The Stone Forest
The Stone Forest (Shilin) is situated in the Lunan Yu Autonomous County, Yunnan Province, China. The stone forest is a special type of karst landform. Its towering rock pillars in high concentration (between 5 and 30m) like a forest of stones, hence the name. These rock pillars, high and strangely shaped, spread widely in an area of over 26,000ha. Only 80ha of this area are open to visitors. The rock pillars are well preserved.
3. Ice Towers of Mount Erebus
Mount Erebus in Antarctica is the southernmost historically active volcano on Earth. Hundreds of ice tower stuck on Mount Erebus. Only in this active volcano lava hot nan nan met with ice cold, and create something unique and natural. The towers has the height of about 60 feet (20 meters). If you think the views of the tower of ice in Antarctica they will be hard to be disclosed by the words.
2. Danxia Landform
Danxia landforms are widely distributed in China, and are discovered in tropical and sub-tropical humid region, temperate humid and sub-humid region, sub-arid and arid region, and Qinghai-Tibet Plateau.
In China, Danxia is a word to describe a unique type of landform which develops both internally and externally through erosion, having the appearance of "rosy clouds."
Pamukkale, which means 'Cotton Castle' in Turkish is located in south-western Turkey in the Denizli Province. Pamukkale is one of Turkey’s top attractions and a precious in the world with its cotton-look terraces. The underground water once gave life to the ancient city of Hierapolis now helps Pamukkale be one of the most important thermal centers of Turkey.
The water which is flowing down the cliff of Pamukkale has turned the area into as white as cotton color, and carved this fantastic formation of stalactites and basins. From the edge of every terrace and every step in this fascinating natural phenomenon that has gradually formed throughout the ages hang brilliantly white stalactites, and you can hear the joyful splashing of the waters of the hot springs as they cascade down over slopes where their flow is impeded only by clumps of oleanders. Enough said. source