A massive dust storm, or haboob, swept across the Sahara Desert from western Algeria into Mauritania, Morocco, Western Sahara and the Canary Islands on Monday. The dust stretched for more than 1,000 miles. As meteorologists observed the dust storm from space via weather satellites, social media users captured the incoming dust storm on camera. One video shows a thick wall of dust and sand moving toward a resident of the town of Tindouf, near the Mauritanian, Western Saharan and Moroccan borders.