Mount Pentelicus is a mountain located in Greece, specifically in the region of Attica. It rises to an elevation of about 1,109 meters (3,632 feet) and is known for its white marble, which was used in ancient times for constructing famous structures, including the Parthenon. The mountain is part of the Penteli mountain range and is characterized by its steep slopes and rich biodiversity. It is a popular destination for hikers and nature enthusiasts, offering scenic views of the surrounding landscape and the nearby city of Athens.