Lake Doxa, Reservoir in Sikyona Municipality, Greece

Doxa is a reservoir in Sikyona Municipality on the Greek Peloponnese, sitting at roughly 900 meters (3,000 feet) elevation between two mountain ranges. The water covers a small valley and is framed by forested slopes and rocky ridges.

The dam was completed in the late 1990s, creating the reservoir from water flowing down from Mount Pentelia and Mount Aroania. Its purpose was to irrigate the Feneos plateau, a project that has not yet begun. The Monastery of Saint George had already been moved northwest to higher ground at the end of the 17th century; its old chapel, later renamed Agios Fanourios, stands at the lake's southern edge.

The Chapel of Agios Fanourios rises on a small peninsula in the middle of the water, reached by a narrow dirt path from the shore. Locals come here to light candles and pray quietly in the tiny church, while visitors walk the path on warm days.

The lake lies at 900 m in the Feneos area of western Corinthia, reached by road from Goura, about 8 to 10 km away. The chapel of Agios Fanourios stands on a small peninsula at the southern edge of the water, joined to the land by a narrow strip. The surrounding area is a declared NATURA site.

The chapel on the small peninsula at the lake's edge is the old katholikon of the Agios Georgios monastery, kept when the monastery moved northwest to higher ground at the end of the 17th century. It was long called Paliomonastiro and now bears the name Agios Fanourios; a narrow strip of land links it to the shore.