Klamath Mountains animal species, including black bears, large cats, owls, eagles, and several species of Pacific salmon. Millions of acres in the mountains are managed by the United States Forest Service. The northernmost and largest sub-range of the Klamath Mountains are the Siskiyou Mountains. Physiographically, the Klamath Mountains include the Siskiyou Mountains, the Marble Mountains, the Scott Mountains, the Trinity Mountains, the Trinity Alps, the Salmon Mountains, and the northern Yolla-Bolly Mountains. They are a section of the larger Pacific Border province, which in turn is part of the Pacific Mountain System (Pacific Coast Ranges) physiographic division. These are the ten highest
Arra Mountains have waited out the flood here. Tountinna, the highest peak, does not qualify as a mountain using the usual convention whereby a mountain is defined (in Ireland and the UK) as any summit at least 2,000 feet (or 610 metres) high, whilst the official UK government's definition of a mountain is a summit of 600 metres or higher. In addition, some definitions also include a topographical prominence requirement, typically 100 feet (30 m) or 500 feet (152 m). In practice, mountains in Scotland are frequently referred to as "hills" no matter what their height, as reflected in names such as