The Sierra Madre Oriental is a mountain range located in northeastern Mexico. It stretches approximately 1,000 kilometers from the United States border to the central part of Mexico. This range is known for its rugged terrain, diverse ecosystems, and rich biodiversity, making it an important area for both wildlife and conservation efforts. The mountains are primarily composed of limestone and are home to various species of flora and fauna. The Sierra Madre Oriental also plays a significant role in the region's climate, influencing rainfall patterns and serving as a natural barrier. It is a vital resource for local communities, providing water and recreational opportunities.