Various theories have been proposed for this phenomenon, the most likely of which is the increase in ground pressure due to the presence of hydrocarbon gases.
One of the most important attractions of this tourist area is its water springs, which, after merging, create a large river, which has become a factor for the creation of large gardens downstream of this promenade.
Koohrang spring has a large volume of water and comes out of the heart of the mountain from a point like a big river and causes prosperity and development along its route.
Tang-e Boraq (Boraq Gorge) is another erosive gorge in the north of Fars province, which is located about 160 km from Shiraz and near a village of the same name.