by Bojan KAVCIC POSTOJNA, Slovenia (AFP) –The strange, slithery creatures inside Slovenia’s Postojna cave were once considered living proof that dragons existed, prompting locals to give it a wide berth. Now large crowds from all over the world queue up to witness the extremely rare hatching of the mysterious olms — ancient underwater predators, which can live up to 100 years and only breed once in a decade. Found primarily in Balkan cave rivers, the […]