Son Doong Cave continues to be honored, ranking among the top 20 record-breaking natural wonders of the world.

Son Doong is a large cave located in Phong Nha - Ke Bang National Park, Quang Binh province. Discovered by locals in 2009, Son Doong is the world's largest cave, measuring 9 km in length, 150 m in width, and over 200 m in height. Its size allows it to form a world with its own independent weather system. Son Doong also boasts an incredibly rich ecosystem, complete with dense forests, underground rivers, and mist-shrouded landscapes. Importantly, the natural scenery remains untouched by human intervention, preserving its captivating pristine beauty.

The cave is part of an underground system connected to 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 stalactite columns, reaching up to 80 meters in height, inside Son Doong Cave are also considered the tallest stalactite formations ever encountered by cave experts worldwide. The Guinness World Records has recognized Son Doong as "The Great Wall of Vietnam".

Son Doong Cave is also the first and only place in the world to have been recognized as the world's largest cave by all three world record organizations: Guinness World Records (based in the UK), the World Record Association (based in Hong Kong), and the World Record Alliance (based in the US and India).

The British TV channel Dave once listed Son Doong Cave among the Top 9 greatest adventure destinations in the world. "Due to its challenging terrain, visitors need to book tours months, even a year in advance, and must go with an experienced team and specialized equipment to explore Son Doong Cave."

Besides Son Doong Cave, Insider also mentioned many other record-breaking adventure tourism destinations such as:

• The Great Barrier Reef, the world's largest coral reef, stretches over 2,000 kilometers off the northeastern coast of Australia.
• Ánge Falls – the world's tallest waterfall, with a height of over 1,283 meters, is located in Venezuela.
• Victoria Falls, the world's widest waterfall, is located on the border between Zimbabwe and Zambia.
• Lake Baikal - the world's largest and deepest lake, located in Russia.
• The Nile River – the world's longest river, stretching over 6,650 km, is located in Egypt.
• Frying Pan Lake - the world's largest hot spring lake, covering an area of ​​over 37,000 square meters.²in New Zealand
• Steamboat Geyser – the world's most powerful and highest-pressured natural hot spring, located in Wyoming, USA.
• Mount Kilauea - the world's largest and most active volcano, located in the United States.
• Iceland - the world's largest volcanic island.
• Lambert Glacier - the world's largest and fastest-moving glacier, located in Antarctica.
• Kutiah Glacier - the world's fastest-rising glacier, in Pakistan.
• Everest, part of the Himalayas, is the world's highest mountain above sea level, reaching 8,848 meters.
• Mauna Kea in Hawaii is the tallest mountain, measuring 10,204 meters from its base deep beneath the ocean floor to its summit.
• Kilimanjaro in Tanzania is the world's highest free-standing mountain peak, reaching 5,895 meters.
• The Dead Sea, the world's lowest exposed landmass, lies between Israel and Jordan, lying 430 meters below sea level, and its water level continues to drop by nearly 1 meter each year.
• Praia do Cassino - the world's longest beach, stretching 244 km, is located in Brazil.
• The Amazon rainforest – the world's largest rainforest – is located in Brazil.
• The General Sherman tree, the world's largest tree with a diameter of over 10 meters, is located in Sequoia National Park, California, USA.
• Sundarbans National Park, the world's largest mangrove forest with 140,000 hectares, is located in the territories of India and Bangladesh.

Huong Thao