The Sierra Madre Occidental is a major mountain range located in western Mexico. It stretches approximately 1,000 kilometers from the U.S. border down to the state of Jalisco. This range is known for its diverse ecosystems, including forests, canyons, and unique wildlife, making it an important area for biodiversity. The mountains are rich in minerals and have been historically significant for mining activities. The Sierra Madre Occidental also plays a crucial role in the region's climate, influencing rainfall patterns and serving as a natural barrier. Its scenic landscapes attract tourists and outdoor enthusiasts year-round.