EXCLUSIVE I slept in the world's largest cave, discovered by accident in 1990 and so big it has its own jungle, river and WEATHER...

and could house a 60-storey skyscraper Laura Sharman travels to Vietnam to explore the largest cave system in the world She describes pitching her tent on a sandy strip in Hang Son Doong Only 1,000 annual visitors are permitted into the caves in groups of 10 READ MORE: Pictured - eight of Cornwall's best beaches By Laura Sharman Published: 09:38, 13 August 2024 | Updated: 09:45, 13 August 2024 e-mail View comments As the sun dips below the horizon, I pitch my tent on the sand. My fellow campers are busy setting up their beds for the night. Leaving my door unzipped, I lay on top of my sleeping bag and look out at the magnificence of our surroundings.

This spot in Vietnam is a strip of sand like no other as it lies deep within Phong Nha-Ke Bang National Park - inside the colossal cave chamber of Son Doong. Exploring inside feels like you are wandering the heart of the Earth. Only 1,000 annual visitors are permitted, in groups of 10, so the six-day trek there sells out quickly with the only approved tour operator, Oxalis Adventures.

Laura Sharman recalls pitching her tent on the sandy riverbank of Son Doong cave in Vietnam. The first night of her six-day trek is spent camping on the beach of Hang En cave (file image above) The cave has been confirmed as the world's largest by Vietnamese officials and Guinness World Records , which in 2012 stated th.