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The biggest cave in the world was surprisingly discovered just 4 years ago in Vietnam. The monstrous Son Doong cave reaches over 5 miles long includes its own jungle and more! Hit the jump to see the beautiful pictures of the natural beauty in the Son Doong Cave!

Adriela Batista

With the Son Doong cave discovery and official exploration in 2009, it has easily become one of nature’s best kept secrets! It has finally began to open its door to tourists hoping to explore the large cavern, which is stated to be so enormous it could hold a 40 story skyscraper.

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“A local man discovered the cave entrance in 1991, but British cavers were the first to explore it in 2009. Now, tour company Oxalis is running trial tours of the cave and accepting sign-ups for real six-day tours to take place next year”

“The man who discovered Son Doong didn’t go in because the entrance he found had too steep a drop. On next year’s tours, visitors will rappel 80 meters to enter Son Doong”

The cave has been untouched for so long that it includes new species of plants

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Its own river and unique cave pearls formed after drops of water become crystalized over yeas on grains of sand.

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The beautiful pictures offer us a glimpse inside one of nature’s masterpieces, including the tour activities that will take place; such as camping in an alluring section of the cave, at a $3,000 cost!

**Check out the pictures above and a video of a tour of the cave below**