The Petroulla hill is located on the foothills of Mount Tetrazi, about 7 km north of the community of Ano Melpeia. At this point, after a short excavation, archaeologists discovered the foundations of an ancient temple. It is an early temple of classical times (end of the 6th-early 5th century BC), which is visible at a maximum length of 5.50 metres, with the thickness of the walls ranging from 0.80 to 0.90 metres, while the maximum length of the temple could be estimated at about 23 metres.
The finds from the excavation were rich and there were dedications by the worshippers to the worshipped deity to whom the temple was dedicated. In addition to the characteristic pottery and tiny vessels, bronze bracelets ending in a snake head, a small bronze vessel, a bronze plate with an ectopic representation of a woman holding a branch, iron chalices and iron utensil fittings were found. A bronze cylindrical stem ending in a lion’s head survives in excellent preservation.