The Eye of Africa taken by astronaut Thomas Pesquet. Simply stunning - and you can enlarge the image too. Wow!
The â€œeye of Africaâ€ in the Sahara desert, Mauritania. It has a diameter of almost 50 kilometres and has been a landmark for astronauts for a long time. It was originally thought to be a meteorite impact crater but know scientists think it was caused by erosion.