After some years gap due to the pandemic, the British caving team returned in 2023 & 2024 to continue the exploration in Quang Binh. In these years, the team surveyed more than 15km of new passages. Highlights were the discovery of a new cave system in Lam Hoa/Hoa Phuc, and the potential for a new deep system in Hoa Son. These latest discoveries continue to fill in the Quang Binh caving map.
After some years gap due to the pandemic, the British caving team returned in 2023 & 2024 to continue the exploration in Quang Binh. In these years, the team surveyed more than 15km of new passages. Highlights were the discovery of a new cave system in Lam Hoa/Hoa Phuc, and the potential for a new deep system in Hoa Son. These latest discoveries continue to fill in the Quang Binh caving map.
2023 was the first opportunity for an expedition after the pandemic. A team of nine cavers investigated a new limestone area between Lam Hoa and Hoa Phuc Villages. They found an extensive system of small stream caves across the Tru and Ka Vong Valleys, including several passages that connected with each other.
The team also started exploring Hoa Son Commune. At Hang Cha Ngheo, they performed a deep vertical descent but had to stop when they ran out of rope, with more of the cave still left to go. Additionally, a diving mission in the upstream section of Hang Va successfully found a new passage leading further into the cave. These results showed that there were still many new areas to map.
The expedition of this year successfully surveyed and mapped a total of 11.7km.
Key Achievements
- Hang Cha Ngheo: A deep vertical shaft in Hoa Son Commune. The team rigged ropes to a depth of -278m, with some spray lashed pitches and small pools. Hanging 30m above a possible floor, they had to turn around due to a lack of rope.
- Hang Pha: An 830m stream cave accessed via a big, open dry shaft. The lower streamway has many pools, cascades, large marmites (potholes), and distinctively colored thin-layered rock.
- Hang Tru 1: A significant resurgence cave totaling 1,919m in length. There are a number of entrances, some stream passage and 800m of phreatic passage with a black cobblestone floor, and a number of striking stalactites with remnant conglomerate cobbles attached.
- Hang Cham Lang: The largest discovery of the caving year with a length of 3,008m, the cave was accessed via a high level entrance and pitches of 12m and 15m. The cave is complex, with several entrances, streamways and dry passages. Some historical wartime artifacts were noted. It connected with Hang Tru 3 discovered earlier in the expedition.
- Hang Ca Xuan: A 1,022m river cave in Hoa Phuc. This cave was explored with the use of Stand Up Paddleboards (SUPs), to make mapping and exploration easier, and avoid long swims.
- Hang Len Phung: A 2,011m cave named after a nearby rock arch, is a small stream cave with extensive low sections requiring crawling. The deeper wet sections were again explored using SUPs
- Hang Va: The upstream sump was dived, and approximately 450m of passage led to a second sump pool.
Hang Cha Ngheo
Hang Cham Lang
Hang Ca Xuan
Hang Tru 1
In 2024, a team of eight cavers and Vietnamese safety specialists from Oxalis investigated several areas. Although 25 cave entrances were investigated, most of the caves surveyed were short. The team also explored some deep shafts in the southern part of the massif, between Khe Ry and Khe Trieng. Additionally, a higher entrance to Hang Khe Trieng was found and explored. Hang Va and Tien 2 sumps were dived
The expedition of this year successfully surveyed and mapped a total of 4,788m.
Key Achievements
- Hang Ong Dau: I think we should not mention his cave as it belongs to the military
- Vuc Hung: A large vertical shaft 83m deep that opens into a 430m long passage filled with massive calcite formations and animal remains.
- Hang Doi Trieng: A large open shaft explorated to a depth of 154m. The rig required multiple bolted rebelays to reach a bouldery floor, leading to a mud-floored chamber with no way on.
- Cave Diving: The second sump in Hang Va was dived for a further 50m. Due to poor visibility no way on was found. A sump pool in Hang Tien 2 was dived for 40m. Although a big sump pool, the visibility was poor, and no way on was found.
Hang Vuc Hung