In a cave 18 metres below the surface at Movile in Romania, sealed off from the outside world for 5.5 million years, biologists have found 48 species that live on hydrogen sulphide and have never seen sunlight

Keyword: Chemical Energy

Publisher: Space Daily

Published: Jul 20, 2026

Eighteen metres beneath a dusty patch of scrubland near the Romanian port city of Mangalia, there is a cave whose air would kill you in minutes. The oxygen concentration hovers at roughly half of wha… [+9471 chars]

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