Azhdahak is a volcano in Armenia, the highest point of Gegham mountains. It has an elevation of 3,597 m above sea. It is part of the Ghegam Ridge volcanic field, which last erupted at 1900 BC ± 1000 years.

There is a lake in the crater of volcano Azhdahak that is formed from melting snow. From the top of the mountain opens the pictorial landscape of mountains Ararat, Hatis, Ara, Aragats, Lake Sevan, the whole Gegham mountains and the Kotayk valley.

In the surroundings of Azhdahak there is a lake, Akna, of volcanic origin. “Akn” means "spring (water)" in Armenian.

The compound slag cone of Azhdahak, figures as a large strewn structure up to 1600m in diameter and about 370m high. The total area of volcano lavas, partly eroded and overlapped by the streams of Tar is around 8 square km. The cone is formed with slags, lapilli, sands, ashes, debris, lava boulders, slag, twisting, composite and spindle-shaped volcanic bombs.

A great number of petroglyphs – rock carvings has been found in the surroundings of Azhdahak. Most images depict men in scenes of hunting and fighting, as well as astronomical bodies and phenomena: the Sun, the Moon, constellations, the stellar sky, lightning, etc.