If you accidentally stumbled upon the town of Huacachina, you might think it is a mirage. Huacachina is centered around a lagoon lined with lush vegetation—all located in the driest desert in the world. Snuggled between the biggest sand dunes in South America, it is the only natural oasis on the continent. On August 15, 2020, the Operational Land Imager (OLI) on Landsat 8 captured this image of Huacachina and the adjacent sand dunes. Huacachina is located in southwestern Peru on the edge of the Atacama desert. The town is located about 5 kilometers (3 miles) from the city of...