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
Sandia–Manzano Mountains of historic U.S. Route 66. The Sandia–Manzano Mountains are often considered to be the northernmost major range in the Mexican Highlands geographic province. A substantial distance gap of much lower elevation grasslands and savanna exists between the Sangre de Cristo Mountains and the Sandia Mountains, and climate conditions shift between both ranges. This distinction is further made by plant, animal, and insect species that are common in both the Sandia–Manzano Mountains and in other mountainous areas to the south, but diminish quickly in the mountains to the north. These include "Quercus turbinella", "Opuntia engelmannii", "Aloysia wrightii", and the western diamondback