Pinaleño Mountains


The Pinaleño Mountains, are a remote mountain range in southeastern Arizona, near Safford, Arizona. The mountains have over of vertical relief, more than any other range in the state. The mountains are surrounded by the Sonoran-Chihuahuan Desert. Subalpine forests cover the higher elevations. According to The Nature Conservancy, they traverse five ecological communities and contain "the highest diversity of habitats of any mountain range in North America." The highest point is Mount Graham at. Locals often refer to the whole mountain range as "Mount Graham", in which case the peak is referred to as "High Peak". The mountains cover and are part of the Coronado National Forest, Safford ranger district.
The Pinaleño/Pinal Band of the San Carlos Apache, one of the subgroups of the Western Apache people and their kin and close allies, the Hwaalkamvepaya/Walkamepa Band of the Guwevkabaya/Kwevkepaya, one of the three Yavapai regional groupings were either named after the Pinaleño Mountains or the mountains were named after them.
The mountains are a Madrean sky island range that is typical of southern Arizona, specifically south-central Arizona, and especially the complete southeastern quadrant of Arizona, from Tucson, and Globe to Nogales, Douglas, and the Chiricahuas. Sky island ranges are mountains isolated by desert valleys. The deserts, as well as differences in elevation, prevent flora and fauna from traveling to or from nearby ecosystems. As a result, the mountain ecosystems are isolated, and distinct subspecies can develop. This is similar to what Charles Darwin discovered with species he collected from different islands in the Galápagos, a discovery that played a major role in his theory of natural selection. The Mount Graham red squirrel is an isolated population of red squirrels and possibly a subspecies as well.
Safford and Willcox, Arizona are the nearest towns to the Pinaleños.

Flora and fauna

The diversity of the flora and fauna in the Pinaleños make them an especially notable range. Trees that grow there include: Douglas fir, Engelmann spruce, quaking aspen, Ponderosa pine, silverleaf oaks, box elder, and bigtooth maple. Frequently seen animals include mule deer, Coue's white tail deer, hawks, and black bear. The Mount Graham red squirrel was once considered to be extinct, but was "rediscovered" in the 1970s and as of June 3, 1987, is officially listed as endangered. For a comprehensive list of the flora and fauna of these biodiverse mountains see the

Pre-Columbian flora

Unlike many of the other mountains in the area, the Pinaleños have no lava deposits. The lava-based mountains found throughout Arizona tend to be barren, whereas the Pinaleños have a large number of trees, including many that pre-date Columbus's arrival in the Americas. "Researchers from the University of Arizona Tree Ring Laboratory have discovered living trees that date back to 1257 and 1270 AD. Botanists say the Douglas firs have survived because the rocky cliffs of the mountains have served as a fire barrier for them. The scientists also found dead firs that dated as far back as 1102 AD."

Heliograph station

Heliograph Peak was home to a 19th-century heliograph station.

Civilian Conservation Corps

The Civilian Conservation Corps completed many projects in the 1930s. "Men from all over the country came to the area to work in numerous camps, several located on Mount Graham." Treasure Park and Columbine were used during the summer months, and Arcadia, Noon Creek and other sites were used during the winter months. "Many of the improvements at campgrounds, as well as hiking trails, roads and other facilities now enjoyed by many visitors to Mount Graham, were built by the CCC personnel."
One of their projects included the construction of a steel framed lookout tower on Heliograph Peak to watch for fires in the Pinaleños and nearby mountain ranges including the Galiuros, Dos Cabezas, White Mountains, Gilas, Rincons and Santa Catalinas. The tower still stands as of 2006, however, most fire watching efforts in Arizona are conducted from the ground or by airplane.

2004 fire

In the summer of 2004 the Nuttall-Gibson complex burned over 30,000 acres in the Pinaleños. Monsoon rains helped firefighters in their efforts. The firefighting cost over $8.5 million and engaged over 800 firefighters. "Crews were able to prevent the fire from damaging the Mount Graham International Observatory and the cabins. There were only two structures damaged by the fires. A historic fire lookout was partially burned, and an electronic equipment storage shack was damaged Tuesday when the Gibson fire hit Heliograph Peak."
Arizona's Governor Janet Napolitano visited the area at the time of the fire. "This is a big, major fire, and it concerns us all," she said. Regarding her aerial tour, the governor said, "The fire looks a lot better today than it did a week ago. I flew over Mount Graham on July 4 and all I could see was smoke. Now, I can clearly see the perimeters the firefighters have been burning." Napolitano provided for inmate wildland fire crews to provide fire suppression and forest thinning services.

Fragile ecosystem

Because the Pinaleños are a sky island mountain range, they are by definition unique. The U.S. Forest Services claims that "prior to about 1870, the Pinaleños maintained healthy, resilient ecosystems that were adapted to naturally occurring fire regimes." They go on to explain that "After European settlement, the natural ecosystem processes were interrupted by passive and active fire suppression, and harvest of large-diameter trees. The result is that today the forests are composed of overly dense, small-diameter trees and snags with excessive amounts of downed wood. The composition of the mixed-conifer forest between about 8,500 and elevation has shifted from fire-adapted to fire-intolerant tree species."

Potential threats from global climate change

Because they are a fragile eco-system, even small climate changes can have a profound effect. With potentially larger climate changes underway, the ecology of the Pinaleños could be threatened. This is the interpretation of the Forest Service. In particular some view the fires of 2004 as an event possibly driven in part by global warming. The agency states that "global climate change and drought are helping to poise the Pinaleños for epidemic insect or disease outbreaks and catastrophic, stand-replacing fires. Indeed, both of these events have taken place in recent years. The flora and fauna have not evolved to tolerate these new conditions or catastrophic events, so there is a need to use silvicultural management and prescribed burning to begin to restore the natural balance in the remaining forests and woodlands."

Mount Graham Observatory

Sitting atop the highest mountain in the Pinaleños is Mount Graham International Observatory, a division of the Steward Observatory primarily maintained by the University of Arizona. The observatory is home to some of the most sophisticated astronomical instruments and telescopes in the world.

Home of world's most advanced telescope

Upon completion the Large Binocular Telescope will peer deeper into space than ever before, and with ten times the clarity of the Hubble Space Telescope. With unparalleled observational capability, astronomers will be able to view planets in distant solar systems, and detect and measure objects dating back to the beginning of time. The LBT is already partially operational.

Controversy

Construction of the observatory was authorized by the United States Congress in 1988. There were two sources of controversy related to the observatory.
First, some Native Americans consider the site to be sacred. They argued that it was unacceptable to deface the sacred mountains with an observatory.
Second, some environmentalists worried that construction of the site would adversely affect the endangered population of the Mount Graham Red Squirrel. The Mount Graham subspecies was thought to have been extinct in the 1950s, but small numbers of squirrels were "rediscovered" in the 1970s. The squirrel was added to the federal endangered species list in 1987 by the U.S. Fish and Wildlife Service, when the estimated population in 1986 was fewer than 400. The Mount Graham subspecies has been isolated from other subspecies of red squirrels since the end of the Pleistocene glacial periods. It is still rather unclear if the Mt. Graham red squirrel is distinct or not from red squirrels elsewhere. Studies on genetic data are in progress.
Astronomers and other personnel working at the site have faced protests, threats of physical violence, and attempts at sabotage on the mountain. As a result of this conflict, a "squirrel permit" must be obtained by anyone visiting the observatory at a facility towards the base of the mountain.

Swift Trail

The Swift Trail is a modern highway making the Pinaleños very accessible. The road is long with 23 paved miles plus of graded dirt. In the course of an afternoon you can experience climate zones you would see in a drive from Mexico to Canada. This switchbacking mountain road was named for T. T. Swift, the first supervisor of the Coronado National Forest. Initially just a trail, the route has been improved many times. Two notable eras of improvent came in the 1930s and the 1990s. The Arizona Department of Transportation celebrated the latest improvements on June 30, 1992.

Peaks of the Pinaleños

  1. Mount Graham .
  2. Hawk Peak
  3. Plain View Peak
  4. Heliograph Peak
  5. Merrill Peak
  6. Ladybug Peak
  7. Greasewood Mountain