Discovered in 1990, Son Doong Cave is the world's largest natural cave, with over 38 million cubic meters of space. Situated within Phong Nha-Ke Bang National Park, a UNESCO World Heritage Site, Son Doong has been open for tourism since 2013.

Sinkhole Camp 1, situated within Son Doong Cave, serves as an overnight camping spot for tourists.

The cave is 9 kilometers long, with heights up to 200 meters and widths of 160 meters. Stalagmites inside can reach 70 meters high.

Foreign newspapers have described the cave's vastness as a space where a Boeing 747 could fly through without damaging its wings.

Son Doong is one of the three Asian representatives on this list, alongside China’s Reed Flute Cave and Laos’ Pak Ou Caves.

Ranked first on the list is Mammoth Cave from the U.S., which holds the title of the world's longest cave system, spanning approximately 676 kilometers. Close behind are Škocjan Cave from Slovenia, and the Waitomo Caves in New Zealand.

Despite its remote location, the Son Doong Cave tours are highly popular. Oxalis, the only company offering tours to Son Doong Cave, announced that all tours for 2024 are fully booked.

Son Doong Cave tours are the priciest and most popular in Vietnam, costing about VND70 million (US$3,000) per person for a six-day and five-night adventure.

Central Vietnam cave reopens to visitors after three years

After a three-year closure, Tien Son Cave at Phong Nha - Ke Bang National Park in central Vietnam is set to reopen on Dec. 21, following a comprehensive upgrade and facility repairs.

Yet another cave discovered in Quang Binh Province

A 1.5-kilometer-long cave filled with striking stalactites has been discovered in a protected forest in the middle of the Truong Son (Annamite) Mountain Range.

Natural outdoor adventure abounds at Tien Cave

A journey to Tien Cave in Lao Cai offers tranquil camping surrounded by the captivating scenery of the remote northern province's rugged and unspoiled mountainous landscape.

Son Doong Cave documentary releases promo video

A promotional video of “A Crack in the Mountain,” an award-winning documentary about Son Doong in Quang Binh was revealed ahead of its premiere in the U.K. and Ireland.

22 new caves discovered in Quang Binh

Twenty-two new caves with unique features have been found by the British Cave Research Association (BCRA) in the central province of Quang Binh, according to Phong Nha-Ke Bang National Park’s Management Board.

Source: VnExpress