Green world: A diver swimming underwater during an expedition in Son Doong cave. — AFP
HANOI: Three divers who helped rescue a Thai football team last year have made a fresh discovery in Vietnam where they explored a tunnel that could expand the footprint of the world’s largest cave.
The team was invited to descend into a waterlogged pit in the Son Doong cave in central Vietnam that has never been explored and is believed to connect to nearby chambers.
