World's third largest cave

Hang En, in Vietnam, is the world's third largest cave and even has its own climate as well as a river and jungle.

And there's no doubt pitching up your tent here for a camping holiday would be unlike any other and give you that perfect spot on the beach. 

At more than 430ft high, and 495ft wide, the imposing cave is as high as the London Eye and wider than one-and-a-half football pitches.

Photographer Lars Krux, 48, ventured into the cave with his wife Justyna Krux, and a party of tourists, in order to capture some stunning shots.

Lars, from Germany, Hamburg, reached the limestone cave, close to the border of Laos, on foot after a six-mile trek through the thick jungle of Phong Nha-Kẻ Bàng national park.

He and his wife Justyna, then had to wade waist-deep through ice-cold water to gain access to the mesmerizing cave.

But after pitching up a tent and spending the night in the cave, Lars managed to capture these stunning images before exploring the depths in a walk through the pitch-black.

'You need to cross several rivers with a water level up to 1.5 meters (5ft) and you'll be attacked by dozens of leeches who are attaching themselves to your skin. This is certainly not to everybody's taste.

'After hours we finally reached the cave and I saw that it was worth it to carry about 15 kilos of photo equipment (Nikon D800 camera, lenses, filters, two tripods) through the jungle.

'From above we saw the giant cave with its small turquoise blue lake, the sandy beach in the cave and some tents, our home for one night right in the cave.

'It was amazing privilege to photographer and sleep in such an exclusive environment.'

The En Hang cave is situated close-by to the Hang Son Doong, the largest cave in the world, which was recently discovered in 2009 by British cavers, led by Howard Limbert.

Son Doong is hidden in rugged Phong Nha-Kẻ Bàng national park in Quang Binh province near the border with Laos, the cave is part of a network of 150 or so caves, many still not surveyed, in the Annamite Mountains.

Son Doong cave is more than 660ft wide, 495ft high, and over five miles long, with caverns big enough to fit an entire city street inside them.

To get a sense of the enormity of the cave, that's as wide as two football pitches and slightly longer than the distance of Buckingham Palace to the Olympic Park.

(dailymail.co.uk)