A mud volcano was the cause of an explosion seen in the Caspian Sea off the coast of Azerbaijan on July 4, officials have said.
The mud volcano lies on the islet of Dashli, around 30 km (18 miles) from the coast, the Azeri Ministry of Emergency Situations said.
It did not pose a threat to offshore oil and gas infrastructure, they said.
This video, released by the ministry, shows flames on the islet.
Azerbaijan’s state oil and gas company SOCAR said none of its industrial facilities were harmed. Credit: Ministry of Emergency Situations via Storyful