Vaght-Saat Cave

Vaght-Saat Cave is one of the most unique natural attractions of Lorestan Province and Dorud County, located on the beautiful slopes of Mount Pariz. The cave lies close to one of the longest and most beautiful valleys of the Zagros, called Negar Valley. It was formed in a limestone setting and is 7 meters wide, 20 meters long and 8 meters high.

Inside the cave is the Vaght-Saat spring. It is named this way because its water naturally stops and starts again at set intervals. The water originates at the far end of the cave, in the ceiling 15 meters above the floor, and falls to the cave floor as a twin waterfall. Depending on the season, the interval between each stop and start varies from 45 minutes to an hour and a half. The strong flow of water from the waterfall lasts for 7 minutes, after which the spring's cycle returns to its initial state, and this whole remarkable process repeats itself continuously and with complete precision.

According to geologists, the cause of this phenomenon is an active fault in the Gohar-Rud Valley beside Mount Pariz. When water vapor builds up deep within this fault and reaches a certain amount, it creates pressure. As a result of this pressure, the water rises to the surface and the spring overflows. Then, as the concentration of water vapor in the fault decreases, the flow of water diminishes and the overflow suddenly stops. Since the spring is located in a mountainous area, the route to reach it is dangerous in autumn and winter, so the best time to visit is spring and summer.