Cueva de la Puerta Located a few hundred meters from the first cave, also found in the middle of the canyon wall. It measures around 25 m and presents vestiges of approximately 12 rooms or enclosures, vandals or treasure hunters partially destroyed floors and walls. It can be appreciated how ancient houses were built. For construction they used a kind of braided rods and branches of local trees, mainly tascar (local species of Juniper) and Fraxinus, over the braids they shaped the adobe walls. The braid is well preserved, still has the fiber used to fasten them. There are two types of fastening; one made with "palmilla" fiber (a species of Century Plant or agave and the other with a tree branch called "sawarique". In one of the rooms, the original floor can be seen, made from adobe so well and smooth finished that it looks like cement. Roof and walls of rooms are black, probably by the accumulation of soot and smoke from fires that through hundreds of years were lit there. There is another cave in the opposite side of the canyon, is smaller with only three rooms, but very well preserved. Half a kilometer above is a small cave with a lonely and small house in very good condition. With an excellent view of the Canyon, probably this place was an observation or surveillance point. The Cultures Human groups of hunter-gatherers arrive in the region from the north, probably Mogollon, Anasazi or Hohokam, following the Sierra Madre Occidental; used plants, took advantage of smaller animal species, as turkeys; occupied the mountains and gradually dispersed in rivers, developing the Paquimé culture or "Casas Grandes", whose first settlers were collectors in the process of learning sedentary traits. An important fact to know is that all of these major centers are aligned on the 108 degree Longitudinal axis. Mogollon culture ( or ) evidences have been found, simple ceramic fragments and other more scarce luxury type materials, characteristic of the Paquime culture. The Site constructors probably were villagers who in addition to intensively exploit the environment, as can be seen in the premises vestiges, cultivated corn, squash, and beans, therefore they established a community use system. Important evidence exists of northern Mexico settlers, of the Casas Grandes culture, sub-region of the Mogollon culture, that along with the Anasazi and the Hohokam comprise the Oasisamerica area. The northern cultural region is