The Sierra de los Cuchillos is a mountain range located in Mexico, specifically in the state of Durango. It is known for its rugged terrain and unique geological formations, which attract hikers and nature enthusiasts. The area is rich in biodiversity, featuring various plant and animal species native to the region. This mountain range is part of the larger Sierra Madre Occidental system, which runs parallel to the western coast of Mexico. The Sierra de los Cuchillos is also significant for its cultural history, as it has been inhabited by various indigenous groups over the centuries, contributing to the area's rich heritage.