This is a rare capture of Hang Son Doong Cave in Phong Nha Ke Bang Providence Vietnam. This mystical cave river only appears at the beginning and end of the monsoon seasons which makes the cave impassable. Only two weeks after this shot was taken this river disappeared for the dry season becoming a muddy trench and 200 meters lower.
Nature never ceases to amaze us! The Devetashka Cave, Bulgaria, is said to be inhabited in the Early Paleolithic and now it has become a protected national landmark. Its quirky structure and lush vegetation oly need dinosaurs to be a perfect spot for a Jurassic World experience!