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Mount Graham (called in Nnee biyati' (Western Apache) Dził Nchaa Sí'an – 'Big Seated Mountain') is a mountain in Graham County, Arizona, United States, approximately northeast of
Tucson Tucson (; ; ) is a city in Pima County, Arizona, United States, and its county seat. It is the second-most populous city in Arizona, behind Phoenix, Arizona, Phoenix, with a population of 542,630 in the 2020 United States census. The Tucson ...
. The mountain reaches in height. It is the highest elevation in Graham County,
Coronado National Forest The Coronado National Forest is a United States National Forest that includes an area of about 1.78 million acres (7,200 km2) spread throughout mountain ranges in southeastern Arizona and southwestern New Mexico. It is located in parts of ...
and the
Pinaleño Mountains The Pinaleño Mountains (in Yavapai: Walkame—"pine mountains" or in Western Apache: Dził Nnilchí' Diyiléé—"pine-burdened mountain"), are a remote mountain range in southeastern Arizona, near Safford (Ich'į' Nahiłtį́į́), Arizona. T ...
. It is also the southernmost peak and land area in the continental United States above . As the name "Mount Graham" is often used by locals to refer to the entire mountain range, the peak itself is frequently referred to as "High Peak". It is twentieth of the 57
ultra-prominent peak An ultra-prominent peak, or ultra for short, is a mountain summit with a topographic prominence of or more; it is also called a P1500. The prominence of a peak is the minimum height of climb to the summit on any route from a higher peak, or fro ...
s of the lower 48 states, and the first of the five in Arizona.


Description

Mount Graham summits are headwaters for numerous perennial streams that tumble through five major
botanical Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s ...
zones. Located between the southern
Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...
and Mexico's
Sierra Madre Occidental The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American C ...
, and biologically isolated for millennia, the higher elevations have provided refuge for relict populations of plants and animals with adaptive strategies rooted in Pleistocene ice age environmental conditions. Of particular note are stands of the oldest conifer trees in the U.S. Southwest and associated habitats for threatened and endangered species, especially the
Mount Graham Red Squirrel The Mount Graham red squirrel (''Tamiasciurus fremonti grahamensis'') is an endangered subspecies of the southwestern red squirrel (''Tamiasciurus fremonti'') native to the Pinaleño Mountains of Arizona. It is smaller than most other subspecie ...
. Located near the northern limit of the
Chiricahua Apache Chiricahua ( ) is a band of Apache Native Americans. Based in the Southern Plains and Southwestern United States, the Chiricahua historically shared a common area, language, customs, and intertwined family relations with their fellow Apaches. ...
homeland and the southern margins of
Western Apache The Western Apache are an Indigenous people of North America, and a subgroup of the greater Apache identity, who live primarily in east central Arizona, in the United States and north of Mexico in the states of Sonora and Chihuahua. Most live ...
territory, the range is one of the Western Apache's four holiest mountains and is considered sacred by all of the region's Native peoples. Since a determination by the Keeper of the Register in 2002, Dził Nchaa Sí'an, as it is known in the Western Apache language, ranks as the largest and most extensive (~330,000 acres) property listed on or formally determined eligible for the National Register of Historic Places. In 1993, the St. Paisius Orthodox Monastery was founded at the base of the mountain. Mount Graham hosts both species of Arizona native trout – Gila and
Apache trout The Apache trout or Arizona trout (''Oncorhynchus apache''), is a species of freshwater fish in the salmon family (family Salmonidae) of order Salmoniformes. It is one of the Pacific trouts. Description The Apache trout measures in length from ...
and three species of introduced trout.


Climate


Mount Graham Observatory

Mount Graham is home to the
Mount Graham International Observatory Mount Graham International Observatory (MGIO) is a division of Steward Observatory, the research arm for the Department of Astronomy at the University of Arizona, in the United States. It is located in southeastern Arizona's Pinaleño Mountains n ...
area, where multiple organizations have set up large
telescope A telescope is a device used to observe distant objects by their emission, Absorption (electromagnetic radiation), absorption, or Reflection (physics), reflection of electromagnetic radiation. Originally, it was an optical instrument using len ...
s in a few separate
observatories An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysics, oceanography and volcanology are examples of disciplines for which observatories have been constructed. Th ...
authorized by a rare peace-time Congressional waiver of U.S. environmental laws."100th Congress"
"Public law 100-696"
Retrieved on April 7, 2023
The
United States Congress The United States Congress is the legislature, legislative branch of the federal government of the United States. It is a Bicameralism, bicameral legislature, including a Lower house, lower body, the United States House of Representatives, ...
authorized construction of the observatories on the mountain in 1988, but there has been outcry from the four federally recognized tribes of the Western Apache Nation and Native American groups, who consider the site to be sacred. Environmental groups, including the
Sierra Club The Sierra Club is an American environmental organization with chapters in all 50 U.S. states, Washington, D.C., Washington D.C., and Puerto Rico. The club was founded in 1892, in San Francisco, by preservationist John Muir. A product of the Pro ...
, also oppose the Mount Graham International Observatory because the higher elevations are the last remaining habitat for the Mount Graham Red Squirrel.


See also

*
List of mountains in Arizona A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but ...
*
List of the most prominent summits of the United States The following sortable table comprises the 200 Topographic prominence, most topographically prominent Summit, mountain peaks of the United States, United States of America. The summit of a mountain or hill may be measured in three principal w ...
* Heinrich Hertz Submillimeter Telescope *
Large Binocular Telescope The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States. It is a part of the Mount Graham International Observatory. When using both ...
* Vatican Advanced Technology Telescope


References


External links

* *
"Mount Graham International Observatory home page"
University of Arizona.
"Mount Graham Coalition"
an advocacy group. {{DEFAULTSORT:Graham, Mount Mountains of Arizona
Mount Graham Mount Graham (called in Nnee biyati' (Western Apache) Dził Nchaa Sí'an – 'Big Seated Mountain') is a mountain in Graham County, Arizona, United States, approximately northeast of Tucson. The mountain reaches in height. It is the highest ...
Mount Graham Mount Graham (called in Nnee biyati' (Western Apache) Dził Nchaa Sí'an – 'Big Seated Mountain') is a mountain in Graham County, Arizona, United States, approximately northeast of Tucson. The mountain reaches in height. It is the highest ...
Mount Graham Mount Graham (called in Nnee biyati' (Western Apache) Dził Nchaa Sí'an – 'Big Seated Mountain') is a mountain in Graham County, Arizona, United States, approximately northeast of Tucson. The mountain reaches in height. It is the highest ...
Mountains of Graham County, Arizona Religious places of the Indigenous peoples of North America Sacred mountains of the United States