|The Wave in Utah is a landscape of rock eroded into a wave-like formation. |
The Jurrasic-age sandstone is approximately 190 million years old.
|The Great Blue Hole in Belize is an underwater sinkhole more than 984 feet across and 407 feet deep.|
|The Badwater salt flats in California is the lowest point in the U.S. at 282 feet below sea level.|
|The walls of the Puente del Inca natural rock bridge in Argentina |
feature bright orange and yellow bacteria mats created by natural sulfur springs.
|The sliding stones of Death Valley, Calif., baffle experts. |
Some stones slide across a perfectly flat bed despite weighing up to 700 pounds each.
|The elephant rock formation in Valley of Fire State Park in Nevada is natural sandstone.|
|The Moeraki Boulders of New Zealand started forming on the ocean floor and |
can now be seen sitting on the shoreline, thanks to centuries of erosion.
|Scientists aren't certain why the water in Lake Hillier in Western Australia is pink.|
|The peculiar pinnacles at Nambung National Park in Western Australia are |
natural limestone structures, some more than 15 feet tall.
|The Tufa pinnacles stand near Mono Lake in California. |
Mono Lake is a closed hydrological basin — water flows into it but doesn't flow out.
|Sinkholes — natural depressions — |
dot the rainforest in Jaua-Sarisarinama National Park, Venezuela.
|Ball's Pyramid, the world's tallest sea stack, is nearly 1,850 feet high. |
The formation is near Lord Howe Island, New South Wales, Australia.
|Limestone pinnacles dot the landscape of Ankarana National Park, Northern Madagascar.|
|The crater lake at Crater Lake National Park in Oregon was formed |
about 150 years ago by the collapse of the Mount Mazama volcano.
|The bizarre pinnacles of limestone rock and eroding fins|
at Bryce Amphitheater in Bryce Canyon National Park, Utah.
|The Champagne Pool is a colorful hot spring |
in the Waiotapu Geothermal area of New Zealand.
|The Beauty Pool at Yellowstone National Park is a hot spring|
with luminous algae and bacteria flourishing, creating a vivid array of colors.