Ali Sadr Cave: Located in the village of Ali Sadr in the northwest of Hamadan, discovered in the 1970s by a Hamadan mountaineering team. The cave has a width ranging from 1.5 meters to 60 meters. In some parts, the cave’s ceiling is up to 15 meters above the water, with many white cylindrical stalactites hanging down. Conversely, in other parts of the cave, there are stalagmites reaching towards the cave ceiling. There are also dry areas within the water network cave, referred to as “islands”. The cave also contains a water source. Ali Sadr Cave is one of the most unique natural landscapes in Hamadan, boasting beautiful and pleasant scenery, and possibly the only cave with a water source in Iran.