Okay, I’m ready to rewrite and optimize the article. Here’s the output:
FAST FACTS
body-text”>who took the photo? An unnamed astronaut on board the International space Station
OYLL, Kazakhstan – A striking image taken by an astronaut aboard the International Space Station reveals an unusual dune field in Kazakhstan, closely resembling a giant slug. Patches of vegetation dot the landscape, hinting at the stabilization of the sands.
Located approximately 175 miles northeast of the Caspian Sea,the dune field lies within the western portion of the Kazakh Steppe,a vast expanse of grassland spanning northern Kazakhstan and parts of Russia. The village of Oyyl borders it to the west, while a large floodplain sits to the east.
The “slug” covers roughly 75 square miles, an area about three times the size of Manhattan.Its widest point stretches approximately 13 miles, according to NASA’s Earth Observatory.
Dune fields typically arise in natural depressions where wind can deposit sand. In this instance, the slug-shaped depression sits about 300 feet below the surrounding terrain.
The sand largely originates from the adjacent floodplain and another to the south. Floodplains, according to National Geographic, become sand sources when they dry, scattering previously trapped sediments that are then carried away by the wind.
Related: See all the best images of Earth from space
The parallel lines seen across the dunes are ridges formed by the prevailing northerly winds. These ridges gradually shift northward over time.
