Ali Sadr (Alisadr) ( ÛÇÑ ÚáíÕÏÑ ) Cave is a cave located in 75 km north of Hamedan in western Iran .The cave belongs to second Jurassic period (130-190 million years ago); its walls can extend up to 40 meters high, and it contains several large, deep lakes. The cave has a river flowing through it and traveling through the cave is mostly done by pedal boats. Ali Sadr cave is situated between the large cities in Hamedan, Tehran and Zanjan making it a popular destination for Iranians and foreign tourists.
The cave was originally discovered during the reign of Darius I (521-485 BC) which can be verified by an old inscription at the entrance of the tunnel. Knowledge of the cave existence there have been within local residents for centuries, however, its exploration as a natural attraction was in 1963. It is opened to public from 1975 to now.
In the summer of 2001, a German/British expedition surveyed the cave to be 11 kilometers long. The main chamber of the cave is 100 meters by 50 meters and 40 meters high.
A tour of the cave can be seen by pedal boats to a centrally located large atrium.
This gallery will ultimately contain about 100 pictures.