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| Newly-discovered centipede, Cryptops speleorex. Top of the food chain in an isolated Romanian cave. Photo credit: Mihai Baciu |
Movile Cave in Romania has been totally isolated from the outside world for 5.5 million years and contains a unique ecosystem entirely dependent on chemosynthetic bacteria, i.e., bacteria that use the minerals in the walls of the cave itself as their source of energy. These bacteria produce a scum on the surface of the underground lake in the cave which forms the basis of the food chain. Their waste products - Sulphur dioxide and carbon dioxide - and the low level of oxygen, makes the atmosphere toxic to creatures such as humans who have not evolved to live in this totally dark, extremely hostile environment.
Here is what I wrote about this cave in 2016:



















