Tonto National Monument's unique and varied resources have attracted scientists for many years. Much of what we know about the monument's archeological, biological and physical resources has been learned through past research. Yet, much still remains to be discovered. Click on the links for more information.
The National Park Service partnered with Northern Arizona University to produce a series of overviews and fact sheets on Tonto National Monument. Click on the links to view these PDF documents.Environment of the Tonto Basin
Did You Know?
Tonto National Monument is home to a crested saguaro. Botanists disagree as to why some saguaros grow in this unusual form. Some speculate that it is a genetic mutation. Others say it is the result of lightning or freeze damage. About one in 150,000 saguaros develop this unusual growth.