Wilderness is land that remains wild and largely untouched by human development. In a wilderness area, you won't find roads, buildings, or power lines. Instead, you'll see forests, mountains, rivers, and wildlife living as they have for thousands of years.

True wilderness feels different from a city park or even a state forest with hiking trails. It's a place where nature still runs the show. Trees grow and fall without anyone clearing them away. Rivers flow along paths they carved themselves. Animals live without seeing humans for months at a time.

The United States protects millions of acres as official wilderness, places where the law prohibits building permanent structures or using motorized vehicles. These areas preserve habitats for grizzly bears, wolves, and countless other species while giving people a chance to experience nature in its rawest form.

When someone talks about venturing into the wilderness, they mean heading into remote, undeveloped country where you rely completely on your own skills and supplies. The word can also describe any wild, uncultivated state. You might describe an overgrown, neglected backyard as a wilderness of weeds and brambles, though that's quite different from protected wilderness areas that remain wild by choice rather than neglect.