Tourism on track in the world's largest cave

Home to flying foxes and a 70-metre rock formation resembling a dog's paw, Son Doong -- a cave so large it has its own ecosystem and weather patterns -- is an otherworldly wonder that has reshaped the lives of the surrounding community since it opened for boutique tourism in 2013.

source https://timesofindia.indiatimes.com/world/rest-of-world/tourism-on-track-in-the-worlds-largest-cave/articleshow/80357840.cms