Journey to explore the deepest sinkhole in Vietnam in Quang Binh

Kong Collapse sinkhole is located in the Tiger Cave System, in the core area of Phong Nha - Ke Bang National Park, Son Trach commune, Bo Trach district, former Quang Binh province. It is located about 50-60km northwest of Dong Hoi. The sinkhole was first discovered by experts from the British Cave Research Association (BCRA) in 1997. Between 2017 and 2019, through expeditions combined with flycam technology, Kong Collapse was fully surveyed and documented in terms of scale and geological value. The name "Kong Collapse" was inspired by the shape of the sinkhole's opening resembling the head of King Kong, combined with the geological term "collapse" used to refer to natural sinkhole phenomena.

Key features:

• Depth: About 450m, recognized as the deepest sinkhole in Vietnam (and among the deepest in the world).

• Size: A massive sinkhole opening with vertical cliffs, containing a primary forest covering over 1.2 hectares, an underground river, majestic stalactites, and a rich ecosystem inside.

• Access: Swimming through Dai A Cave (underground river 300-500m), abseiling from the sinkhole opening (stages of 30m + 20m + 50m), or challenging jungle trekking.

This is part of the Phong Nha - Ke Bang cave system, home to the famous Son Doong Cave, but Kong Collapse offers its own distinct adventure and pristine wildness.

The journey to explore Kong Collapse lasts 3–5 days (2–4 nights), combining primary jungle trekking, cave exploration, and adventure activities. This is an expedition tour designed for visitors with good physical fitness who love conquering nature.

• Jungle trekking: Traverse a distance of 20–23 km through primary forests, limestone mountains, streams, and various challenging terrains.

• Cave exploration: Swim through the underground river in Dai A Cave, explore Tiger Cave, Over Cave, and Pygmy Cave – one of the largest caves in the world.

• Abseiling to conquer the sinkhole: One of the most impressive highlights is abseiling from the mouth of the sinkhole at a height of about 100–130 m. With the assistance of specialized equipment and a technical safety team, visitors will step by step conquer vertical rock walls and admire the panoramic view of the sinkhole from a unique perspective.

• Camping in nature: Spending the night at the campsite inside the sinkhole is a rare experience where visitors can immerse themselves in untouched nature, gaze at the sky through the sinkhole opening, and enjoy the tranquil atmosphere in the deep forest.

• Professional support: The entire journey is accompanied by experienced tour guides, a safety team, and porters. Equipment such as ropes, helmets, headlamps, and technical gear all meet international safety standards.

The journey to conquer Kong Collapse is not only an exploration of magnificent nature but also an opportunity to challenge yourself, train your willpower, and become one of the few travelers with the chance to set foot in Vietnam's deepest sinkhole.

The Kong Collapse tour is suitable for travelers who love exploration and have good physical fitness. Due to its adventurous nature, the journey is not suitable for everyone.

• Age requirement: Typically from 16–65 years old, depending on health condition.

• Health requirements: Ability to trek long distances, no cardiovascular, blood pressure, respiratory, joint/bone diseases, or acrophobia (fear of heights).

• Pre-tour preparation: Participate in an abseiling skill briefing session and complete health declarations and checks as required.

Tours are organized in small groups (10–15 guests) to ensure safety and enhance experience quality. For first-time expedition participants, it is recommended to choose reputable organizers with experienced guides and safety experts.

The tour price for exploring Kong Collapse depends on the program duration and departure time:

• 3-day 2-night tour: From 15–25 million VND/person.

• 5-day 4-night tour: Around 35 million VND/person, including tour guides, skill training, specialized equipment, porters, meals, accommodation, and insurance.

Note: Tour prices may vary depending on the tourist season and policies of each organizer. Travelers are advised to book early to choose a suitable departure schedule and receive special offers (if any).

Photo: Beautiful night scenery with a starry sky

In recent years, adventure tourism in Quang Binh continues to be a hot trend, especially with destinations like Kong Collapse, Son Doong Cave, and Pygmy Cave. According to experts, green and sustainable tourism is growing in popularity, with an increasing demand to explore destinations with minimal environmental impact. Kong Collapse, with its pristine beauty and tours operated under international safety standards, fully meets this trend.

In addition, promotional campaigns for Quang Binh tourism, such as Fit Tour's "Into the Cave" program or posts from famous travel bloggers, are making Kong Collapse increasingly attractive to young adventure seekers. Kong Collapse sinkhole is not just a destination, but a journey for you to explore nature, challenge yourself, and create unforgettable memories.