This satellite photo shows the stark contrast between a field of "star dunes" in Algeria and a rocky terrain, which is mostly located within Libya. The stark contrast where a field of "star dunes" meets rocky hills Which satellite took the photo? The dunes overlap with a windswept rocky terrain, which is among "the driest parts of the Sahara Desert" and almost completely devoid of vegetation, according to NASA's Earth Observatory . Related: See all the best images of Earth from spaceExperts believe that a majority of the sand in the satellite image likely originated from the surrounding rocky terrain. (Image credit: Getty Images)The dunes in the image are all located within Algeria, while most of the rocky terrain is in Libya.