The Sierra de San Mamede is a mountain range located in the province of Ourense, in the northwest of Spain. It is part of the larger Galician region and features diverse landscapes, including lush forests, rocky peaks, and rich wildlife. The area is known for its natural beauty and is a popular destination for hiking and outdoor activities. This mountain range is also home to the Sierra de San Mamede Natural Park, which protects its unique ecosystems and biodiversity. The park offers various trails and viewpoints, allowing visitors to explore its scenic vistas and enjoy the local flora and fauna.