Son Doong — The World’s Largest Cave

Son Doong Cave – located in the heart of the UNESCO – Phong Nha Ke Bang National Park in Vietnam’s Quang Binh province, Son Doong Cave is one of the most captivating destinations that can be experienced in Southeast Asia.

Son Doong — The World's Largest Cave

The cave is a part of the underground system connected to more than 150 different activities in Vietnam, located near the border with Laos. Limestone mountains Vietnam – Laos border region has many caves, such as the Phong Nha has been known for a long but Son Doong cave has been discovered only in 1991 when Ho Khanh, a local people stumbled out into the isolated store to avoid the rain.He noticed clouds and the sound of an underground river gushing from a large hole in the limestone, and reported his findings to the British Caving Research Association (BCRA), who were stationed in Phong Nha at the time.

Unfortunately Ho Khanh lost his bearings during his return, and the exact location of the cave remained lost for 18 years. In 2008 while hunting for food he stumbled across the entrance again, and returned the following year with Howard and Deb Limbert from the BCRA.

They began the exploration of the cave, and in 2010 determined it to be the largest ever discovered in terms of the size of its cross-section. The news shook the caving world.

Son Doong — The World's Largest Cave

Son Doong cave is formed about 2-5 million years ago, when river water flows through the limestone was buried along a fault line. Water erosion and curettage as a giant tunnel under the mountains in the earth. In the soft places, the ceiling collapsed forming holes, hang long into the giant arch.

Stretching more than five kilometers (three miles) long and reaching heights of 200 meters (650 feet), the main cavern of Son Doong cave is large enough to house an entire New York City block.

In 2013 Son Doong cave was opened to the public for the first time, with the adventure tour company Oxalis running the exclusive five-day expedition. Limiting the tour to only one operator has protected the cave from mass development. Only 10 customers per departure are permitted. Tours run once per week between February to August per year.

Son Doong — The World's Largest Cave

The eco-system inside Son Doong cave is as unique as it is large, and it even has its own localized weather system. Rare limestone cave pearls are scattered in dried pools, and the largest stalagmite ever found stands 80 meters (262 feet) tall.
Collapsed ceilings have created openings known as dolines, allowing foliage to grow inside the cave. Microscopic organisms thrive in the darkness.

The journey to Son Doong cave is not for the faint-hearted. Involving two days of intense jungle trekking and river crossings to reach the entrance, nights are spent camping inside the cave and the nearby Hang En, now known to be the third largest cave in the world. Once inside hikers are expected to abseil, climb, crawl and swim through underground rivers to arrive at the end of the cave.

It’s an adventure like no other.

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