Gobustan National Park, Azerbaijan (15) – A unique geo-thermal reaction at Gobustan Mud Volcanoes

Gobustan National Park, Azerbaijan (14) – Out taxi driver and Jon walking towards the mud volcanoes

Gobustan National Park, Azerbaijan (16) – Close up of a Gobustan Mud Volcanoe's bubbling surface

A unique geo-thermal reaction at Gobustan Mud Volcanoes, Gobustan National Park, Azerbaijan