 Abundance of water during springtime due to the fact that the river was very near, made it a wise choice for long stays, as can be seen by plenty of indigenous tombs, remains of ceramic and stone artifacts that are found in the village's surrounding area.Studies made for dating these settlements have been made -among other methods- by the tree-ring dating method on tree trunks.It has been concluded that Trincheras, Sonora as well as Snaketown, Arizona (south of Phoenix) are contemporary, dating back to 800 and 1200A.D.