There is an ancient trade route in the Southwest that extended from Monterrey-Mexico to Taos, New Mexico.  This trade route was heavily used back in the early/mid. 16th century when Coronado made his first appearance in New Mexico!  Coronado was an explorer from Spain…When he and his explorers first saw the sun reflecting from Taos Pueblo(ancient adobe/hardened mud constructed); he was convinced it was made of gold!  Francisco Vasquez de Coronado set out in 1540 from Compostela(Mexico) with an elaborate expedition to find the fabled wealth of the Seven Cities of Cibola to the North.   The expedition crossed the Sonoran desert and SE Arizona and reached Cibola itself- the Zuni country of New Mexico…His expedition found no fabled wealth!  the expedition did explore Taos, Acoma and various other Pueblos near the Rio grande.(