The Bob Marshall Wilderness Complex consists of three wilderness

Wilderness

Wilderness or wildland is a natural environment on Earth that has not been significantly modified by human activity. It may also be defined as: "The most intact, undisturbed wild natural areas left on our planet—those last truly wild places that humans do not control and have not developed with...

 areas, all within the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Montana

Montana

Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

 totalling over 1.5 million acres (6,100 km²). The largest wilderness area is the Bob Marshall

Bob Marshall Wilderness

The Bob Marshall Wilderness is a wilderness area in Flathead National Forest of western Montana in the United States. It is named after Bob Marshall , an early forester, conservationist, and co-founder of The Wilderness Society. The Bob Marshall Wilderness extends for 60 miles along the...

 consisting of 1 million acres (4000 km²). Adjoining the Bob Marshall to the north is the Great Bear Wilderness

Great Bear Wilderness

The Great Bear Wilderness is located in northern Montana, United States, within Flathead National Forest Created by an act of Congress in 1978, the wilderness comprises 286,700 acres and borders the Bob Marshall Wilderness on the north...

 of 286,700 acres (1,160 km²), and to the south of the Bob Marshall is the Scapegoat Wilderness

Scapegoat Wilderness

The Scapegoat Wilderness consists of 239,936 acres spread across three different National Forests in the U.S. state of Montana. Created by an act of Congress in 1972, the wilderness is located in Lewis and Clark, Helena and Lolo National Forests...

 consisting of 239,936 acres (971 km²).

Located in the northern Rocky Mountains

Rocky Mountains

The Rocky Mountains are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States...

 along the Continental Divide

Continental Divide

The Continental Divide of the Americas, or merely the Continental Gulf of Division or Great Divide, is the name given to the principal, and largely mountainous, hydrological divide of the Americas that separates the watersheds that drain into the Pacific Ocean from those river systems that drain...

, the region is as primitive as any found in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 outside of Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

. Although renowned for excellent fishing

Fishing

Fishing is the activity of trying to catch wild fish. Fish are normally caught in the wild. Techniques for catching fish include hand gathering, spearing, netting, angling and trapping....

 and backpacking

Backpacking (wilderness)

Backpacking combines the activities of hiking and camping for an overnight stay in backcountry wilderness...

 opportunities, most of those that enter the wilderness complex do so on horseback and there are outfitters that provide guided pack trips into the region. The Bob Marshall Wilderness Complex is also well known for being prime Grizzly bear

Grizzly Bear

The grizzly bear , also known as the silvertip bear, the grizzly, or the North American brown bear, is a subspecies of brown bear that generally lives in the uplands of western North America...

 habitat, and the population density of this species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

is higher there than anywhere else in the lower 48 states.