The third season of excavations in Alamut, the fortress of Hassan Sabbah, has led to discovery of some residential rooms and water supply systems.

"During the third season of excavations in Sabbah Fortress, six residential rooms, some tile works, water supply systems and their tanks have been unearthed," announced head of the excavation team, Hamideh Choubak.

The turquoise glazed tile works indicate that the fortress has once had decorative architecture, and the discovered water systems can provide answers to many of the questions concerning the water supply of soldiers and residents of the fortress.

According to Choubak, the project is intended to benefit from the aid of foreign experts, especially those of UNESCO.

Alamut Fortress, or the Nest of Eagles, belongs to Hassan Sabbah and the Ismailyeh rulers who defeated the Seljuks and the Abbasid caliphs for 170 years.

The historically invaluable monument has been noted by archeologists and other groups because various parts of the fortress are still undiscovered. The area has so far gone under three excavation seasons, with the recent one starting in August 2003.