Valley of Ten Thousand Smokes Valley of Ten Thousand Smokes The Valley of Ten Thousand Smokes is a valley within Katmai National Park and Preserve in Alaska which is filled with ash flow from the eruption of Novarupta on June 6–8, 1912. Following the eruption, thousands of fumaroles vented steam from the ash. Robert F. Griggs, who explored the volcano's aftermath for the National Geographic Society in 1916, gave the valley its name, saying that "the whole valley as far as the eye could reach was full of hundreds, no thousands—literally, tens of thousands—of smokes curling up from its fissured floor." Prior to the eruption,
The Metropolitan Area of the Aburrá Valley the 10 cities and municipalities part of this metropolitan area is close to 4 million inhabitants. The development of the Aburra Valley occurred in the 1930s after a rapid population growth that produced a conurbation of Medellín, Itagüí, Envigado and Bello. Medellín, as the capital of the Antioquia Department, main economic center and host of most of local government entities contributed to a rapid urban development which absorbed many corregimientos such as Robledo, La América, La Floresta, Guayabal and Belén, among others. With the industrialization the middle and higher class moved to the southern parts of the city like El