Inside Hang Son Doong, the world’s biggest cave, the size of the caverns is on another level. Without a caver for scale it is hard to portray just how gigantic the cave is. This image looks back towards a sunbeam filtering through the cave mist into a karst window called “Watch out for Dinosaurs”, a comment called out to the first caver to ever climb into this primeval-looking chamber.
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FSD 