The Galisteo Basin and the Cerrillos Hills, an ancient seabed ringed by ancient volcanic upheavals, are located in Central New Mexico. The region has been occupied for thousands of years. The oldest known turquoise mines in North America, as well as the earliest significant gold strike in North America, can be found in this region. The town of Galisteo was founded in 1617, while Los Cerrillos got its start as a railroad stop and regional center in 1880. Archaeological work on eight major Pueblo ruins was initiated in 1912 by Nels Nelson of the American Museum of Natural History. Many photographs from his expedition are found in this book, with several of them never having been published before. Also included are images of Cerrillos Hills mining in 1880; again, some of these photographs have never been previously published.