This is an incredible place as it has a beautiful natural well which was used by ancient peoples to irrigate over 7 miles of crops and the remnants and ruins of homes built into the cliffs and surrounding areas. Admission was free and rangers were present while we visited who shared the history of the site and answered questions. The water in the well is too high in CO2 to support much life but contains some living things including some species found nowhere else. Now the well drains into the river, you can walk from the anyone well to the river but sadly there is no swimming. Montezuma Well is a great day trip destination or stop along the way from or to northern AZ and is very near Montezuma Castle which is another amazing historical site to see.