Ol Doinyo Lengai, located in Tanzania, is the only known actively erupting carbonatite volcano on the planet (specifically, natrocarbonatites), and is one of the most unique volcanic landscapes on the planet. Carbonatite lavas are unique- they’re volcanic rocks with high levels of carbon that occur only in tectonic rifting zones. Ol Doinyo Lengai’s magma also contains high levels of sodium, meaning that the magma is water soluble. It also looks nothing like you’d expect magma to look like, as you can see in the video. The magma has been known to freeze in midair, and shatter upon hitting the ground. Short lived, strange looking sculptures dangling off rocks are also known to occur.