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
Saint Praxedis (painting) another version or copy of the Ferrara painting was the model for Vermeer's work. In 1998, Wadum argued that the painting was not a copy of the work in Ferrara, or indeed of any other work, because the background elements were painted before the foreground, as is typical of an original work rather than a copy. In 2014 Christie's put forward the argument that this could be explained as experimentation by Vermeer, the young artist trying to recreate and adapt the technique used to create the original. Saint Praxedis (painting) Saint Praxedis is an oil painting attributed to Johannes Vermeer.