Son Doong is a large cave located in Phong Nha - Ke Bang National Park, Quang Binh province. Son Doong was discovered by locals in 2009, is the largest cave in the world with a length of 9 km, a width of 150 m and a height of more than 200 m. This size is enough to form a new world with an independent weather system compared to the outside. Son Doong Cave also has an extremely rich ecosystem with dense forests, underground rivers, clouds and mist, and especially, the natural landscape here is not affected by human hands, so it still retains its attractive wild beauty.
The cave is part of an underground system connecting more than 150 other caves in Vietnam located near the border with Laos. Geologists believe that Son Doong was formed more than 2 to 5 million years ago. The 80 m high stalagmites in Son Doong Cave are also considered the tallest stalactites that cave experts in the world have encountered. The World Record Book has recognized Son Doong as “The Great Wall of Vietnam”.
Son Doong Cave is also the first and only place in the world today that has been recognized by three World Record Organizations: Guinness World Records based in the UK, World Record Association based in Hong Kong and World Record Union based in the US and India as the largest cave.
British TV channel Dave once listed Son Doong in the Top 9 greatest adventure destinations in the world. “With the rugged terrain, visitors need to register for tours months, even years in advance and must go with an experienced team with specialized equipment to explore Son Doong Cave.”
In addition to Son Doong, Insider also mentioned many other record-breaking adventure tourist destinations such as:
- Great Barrier Reef - the world's largest coral reef, stretching more than 2,000 km off the northeastern coast of Australia
- Angel Falls - the highest waterfall in the world with a height of over 1,283 m, in Venezuela
- Victoria Falls - the world's widest waterfall, located on the border of Zimbabwe and Zambia
- Lake Baikal - the world's largest and deepest lake, in Russia
- The Nile River - the longest river in the world with a length of more than 6,650 km, in Egypt
- Frying Pan Lake - the world's largest hot spring with an area of over 37,000 m2in New Zealand
- Steamboat Geyser - the world's tallest and most powerful natural hot spring, in Wyoming, USA
- Mount Kilauea - the world's most active volcano, in the US
- Iceland - the world's largest volcanic island
- Lambert Glacier - the world's largest and fastest moving glacier, in Antarctica
- Kutiah Glacier - the world's fastest-rising glacier, in Pakistan
- Everest in the Himalayas - the highest mountain in the world above sea level at 8,848 m
- Mauna Kea in Hawaii - the highest mountain from its base deep under the ocean floor to its peak at 10,204 m
- Kilimanjaro in Tanzania - the world's highest freestanding mountain at 5,895 m
- The Dead Sea - the lowest exposed land in the world, located between Israel and Jordan, is 430 m below sea level and the water level here is still dropping nearly 1 m every year.
- Praia do Cassino - the longest beach in the world with 244 km in Brazil
- Amazon - the world's largest rainforest in Brazil
- General Sherman Tree - the world's largest tree with a diameter of more than 10 m, located in Sequoia National Park, California, USA
- Sundarbans National Park - the largest mangrove forest in the world with 140,000 hectares, located in India and Bangladesh
