When mountain-building ended around 50 million years ago, the landscape of southwest Montana did not look like the spectacular, snow-capped mountains we see today.

The Appalachian Mountains are a mountain range that covers 1,500 miles in the United States, from Northern Alabama to the Canadian border. The Appalachian Mountains are ancient, or very old.

Try to identify the rocks by name or at least by type, i.e., sedimentary, metamorphic, igneous. (Note: Do not collect rocks from protected areas such as Red Rock or any of the Parks or Conservation Areas.)

Mountains and Basins extends from the Rio Grande east to the Pecos River. Because most of the region lies west of the Pecos River, it is sometimes called the Trans-Pecos area.

The Franklin Mountains, the northern parapet of the Paso del Norte (Pass of the North), have long attracted a parade of people and cultures. Prehistoric inhabitants visited the mountains from …

The Blue Ridge Parkway means mountains—the highest of them mantled with trees and wildflowers uniquely their own. It also means meadows—some for farming, others that beckon visitors to wander …

The Monument consists of five mountain ranges: Organ Mountains, Doña Ana Mountains, Sierra de las Uvas, Robledo Mountains, and the Potrillo Mountains. These mountain ranges are a part of the …