Keepers of Prometheus: The World’s Oldest Tree
An ancient tree that stood on a Nevada mountaintop for nearly 5,000 years - as civilizations rose and fell and humans explored the Earth - now finds its home in the UA Laboratory of Tree-Ring Research. A member of the long-lived Bristlecone pine species, the tree called Prometheus is the oldest individual ever known to have lived.
For Public
Public events include our Monday Night Lecture Series, world-reknowned Astronomy Camp and Mt Lemmon Sky Center.
For Students
A good place to start if you want to become an undergrad major or grad student, or need to find our schedule of classes.
For Scientists
Find telescopes and instruments, telescope time applications, staff and mountain contacts, and faculty and staff scientific interests.
