Orange you glad you didn't keep scrolling? 🍊 The blue streak that snakes through this photo, taken from about 250 miles (400 km) above Earth, is known as the Orange River—the largest river in South Africa. However, what probably caught your eye were the orange-red dunes surrounding it, part of the southern Kalahari Desert. Poking up through the sands are sinuous hills made up of very ancient, dark-toned rocks. Image description: A photo of a reddish desert, seen from space. A deep blue river snakes from the top to the bottom of the image, with scattered hills and mountains in shades of black and white. A few small roads and settlements are barely visible in various places. Credit: NASA #NASA #Space #Earth #SouthAfrica #Kalahari #Desert