11. Fissure vent Shield volcano Lava dome Cinder cone Stratovolcano Supervolcano Submarine volcano Subglacial volcano Mud volcano 12. A major fault system may have been reactivated, resulting in the formation of a mud volcano . 13. It is considered to be a mud volcano . 14. One study found that the mud volcano was collapsing under its own weight, possibly beginning caldera formation. 15. Nantha Kyun rises to a height of and has a large active mud volcano in the middle. 16. Mud volcano temperatures can range from near to occasionally, some being used as popular " mud baths ."17. In the same Bohorodchany Raion visitors may find the local "'mud volcano "'located near the village of Starunia. 18. ;24 January : The towfish being used by the " Fugro Discovery " collides with an undersea mud volcano . 19. It is endemic to the deep-water mud volcano slopes in the Gulf of Cadiz in the eastern Atlantic Ocean. 20. On 24 August 2013, a small mud volcano popped up at the centre of the via Coccia di Morto roundabout.