The Berwyn Mountains are a mountain range located in northeastern Wales, primarily within Powys and Gwynedd counties. They are part of the larger Snowdonia National Park and are known for their rugged terrain, scenic beauty, and diverse wildlife. The highest peak in the range is Cadair Berwyn, which rises to 2,665 feet (810 meters). The mountains are popular for outdoor activities such as hiking, climbing, and birdwatching. The area is characterized by its rolling hills, deep valleys, and numerous streams and lakes. The Berwyn Mountains also hold historical significance, with ancient sites and ruins scattered throughout the region.