The cult of fire worship was of paramount importance throughout the history of pre-Islamic Iran.
The greatest mud volcanoes in the world, Boyuk Kyanizadag, Touragai, Boyuk Kharamy and Kaimas, rise majestically above the surrounding landscape.
Mud volcanoes usually form mounds of varying size. They take the form of a truncated cone, from 5 to 500 m high, outwardly resembling a magmatic volcano.
