Centennial Mountains Rock Lakes National Wildlife Refuge, state and private land, and part of a USDA Agricultural Research Station for sheep. Around 326 vascular plant species have been identified in the Centennials, an unusual plant diversity for the Yellowstone region. Grizzly bears inhabit the area, as nearly all species indigenous to the Greater Yellowstone Ecosystem are present. The north slope of the Centennials rises abruptly 3,000 feet above the Centennial Valley. Centennial Mountains The Centennial Mountains are the southernmost sub-range of the Bitterroot Range in the United States states of Idaho and Montana. The Centennial Mountains include the Western and Eastern Centennial
Pinal Mountains shooters which led to the naming of the Canyon and the trail, in what was then the American frontier in Arizona. Today, however, there are no active mines on the mountains and most of the previous mines have long been mined out. The Pinal mountains has a variety of plant and animal life, several species are exclusive only to the Pinal Mountains and the nearby area. Such as the "Oligocentria pinalensis" and a variable species of the Arizona hedgehog cactus. Other species of flora include Ponderosa pine, White fir, Juniper, Gambel oak, and "Senecio neomexicanus toumeyi" ( also known as