Tumamoc Hill

Tumamoc Hill, Cemamagĭ Doʼag in O'odham, is a butte immediately west of 'A' Mountain and downtown Tucson, in Pima County, Arizona. The 860-acre ecological reserve on the hill was established by the Carnegie Institution in 1903 and is a National Historic Landmark; the University of Arizona owns 340 acres of it and leases a further 509 acres as a research and education facility. The university's Desert Laboratory stands on the hill, as does a small astronomical observatory maintained by Steward Observatory with a 20-inch telescope. The hill also carries a number of radio, television and public safety transmitters, and is used for ecological and anthropological research as well as for recreation.

Where it is

Tumamoc Hill is a natural landmark near Tucson, in Pima County. It is one of the natural landmarks in this database, and appears in the statewide ranking of Arizona attractions.

How this ranking was reached

No official visitor count is published for Tumamoc Hill, so its score rests on public interest and tourism significance, and is capped below the level a measured attraction can reach. That is why the medium confidence above is not higher. The weighting is explained in full on the methodology page, and every axis is broken out under Facts and sources at the foot of this page.

Note on the data: No official visitor count is published for this attraction.

Sources

• Public interest: Wikimedia pageviews (en.wikipedia, human traffic), 2024
• Coordinates and designations: Wikidata(opens in a new tab)
• County: U.S. Census geography via FCC Area API, resolved from coordinates

Record last verified 2026-08-12.