Valles Caldera Valles Caldera dates back to the prehistoric times: spear points dating to 11,000 years ago have been discovered. Several Native American tribes frequented the caldera, often seasonally for hunting and for obsidian, used for spear and arrow points. Obsidian from the caldera was traded by tribes across much of the Southwest. Eventually, Spanish and later Mexican settlers as well as the Navajo and other tribes came to the caldera seasonally for grazing with periodic clashes and raids. Later as the United States acquired New Mexico as part of the Treaty of Guadalupe Hidalgo in 1848, the caldera became the backdrop
Práxedis G. Guerrero, Chihuahua Treaty of Guadalupe Hidalgo. Its current name was given to it by the State Congress in December 1983, to honour the Revolutionary leader Práxedis G. Guerrero, who was killed in action in Janos, Chihuahua, on 30 December 1910. Práxedis G. Guerrero, Chihuahua Práxedis Gilberto Guerrero is the municipal seat of the municipality of Práxedis G. Guerrero in the northern Mexican state of Chihuahua. In the 2005 Census, the town reported a population of 3,431. Only five years later, at the 2010 census, the population had declined dramatically to 2,128 inhabitants. The town was founded in 1849, as San Ignacio, by