Sierra Bermeja

Sierra Bermeja is a mountain range in southwestern Puerto Rico, extending from Cabo Rojo to Lajas along the southern edge of the Lajas Valley near La Parguera. Its volcanic rocks and faults of serpentinite and amphibolite may be the island’s oldest known rock, giving the range exceptional scientific importance. The hills also hold a long human history, serving as a refuge for Taíno people during the Spanish conquest and early colonial era and later becoming linked with smugglers and local folklore. One of the region’s few forested areas, it provides vital habitat for wildlife, supports species nesting near Laguna Cartagena, and has drawn conservation and research efforts amid development pressure.

Puerto Rico · United States