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
Marisol Valles García around 30,000. Mayors and police have been specifically targeted; some beheaded, some tortured to death. In early October 2010, Tancítaro's mayor Gustavo Sánchez was found beaten to death with his hands tied behind his back. Elected in January, he'd stated "The fear is always there, but if you have courage and a desire to make a contribution, that outweighs the fear". Prior to the war on drugs, rural Praxedis G. Guerrero, Chihuahua was a quiet town. Two rival drug gangs, the Juárez Cartel and the Sinaloa Cartel, now fight for control of the region's main highway, making Chihuahua one of