Ash column from eruption, 1999; photo by Daniel Andrade, taken from mid-town Quito. Map of mud and debris flow hazards in Quito. North is to the right. From http://www.epn.edu.ec/~igeo/Vulcanologia/Volcanes/Guagua/Informeg/informeg.html. Pyroclastic flow hazards from Guagua Pichincha. From http://www.epn.edu.ec/~igeo/Vulcanologia/Volcanes/Guagua/Informeg/informeg.html. Looking to the SSE from the S flanks of Guagua Pichincha; Lloa is in the foreground on the first plateau, and Quito is seen in the distance below. The snow-covered peak is Cotapaxi. Town center in small village north of Quito. Market on outskirts of Quito. Farmland north of Quito. Public transportation in Ecuador. Typical unconsolidated material on hillside (flank). N. Quito near the airport. Quito airport (Northern edge of city) Mid-town Quito. New Quito (location of most administrative buildings, banks, etc.) Old Quito, midday. View East from Western valley wall of Quito (Pichincha flank). Eastern flank of Pichincha (western valley wall of Quito). Eastern flank of Pichincha, mid-Quito (left), Old Quito (right)