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 Romero the tournament after her fellow Mexican Adriana Fernández. She began 2012 with a win at the LALA Marathon in Torreón, which she completed in a time of 2:31:15 hours. She competed at the 2012 Summer Olympics, finishing in 46th place in the women's marathon. Marisol Romero Marisol Guadalupe Romero Rosales (born 26 January 1983) is a Mexican long-distance runner who competes over 5000 metres and 10,000 metres on the track and in half marathon and marathon road races. She won the marathon at the 2010 Central American and Caribbean Games and completed a 5000/10,000 m gold medal double at the