Mount Pentelicus or
Pentelikon (, or ) is a mountain range in
Attica,
Greece, situated northeast of
Athens and southwest of
Marathon. Its highest point is the peak
Pyrgari, elevation 1,109 m. The mountain is covered in large part with forest (about 60 or 70%), and can be seen from southern
Athens (
Attica), the Pedia plain,
Parnitha, and the southern part of the northern suburbs of
Athens. Houses surround the mountain, especially in
Vrilissia, Penteli,
Ekali,
Dionysos and north of
Gerakas.