Rescue workers in Laos searched Monday (June 1, 2026) for an alternative passage into a flooded cave where two people are believed to have been trapped for nearly two weeks after heavy rainfall flooded the main entrance, making it impassable.

The two people remain unaccounted for since a search and rescue operation began last month in a rugged area of Xaisomboun Province, about 120 km north of the capital, Vientiane. 5 of the 7 people initially trapped inside the cave have been rescued.

Malaysian diver Lee Kian Lie, who is involved in the operation, said workers were pumping water out of the cave.

“We will go into the suspected area to continue the search if the water level is lowered,” he told The Associated Press.

Another team of rescuers is also looking around the other side of the cave in hopes of finding a dry passage that could provide access to the area where the missing people are believed to be trapped, he said.

Rescue teams from Laos and neighbouring Thailand have been working together for more than a week. They were joined by divers from countries including Finland, Malaysia, Japan, Indonesia, France and Australia.

Several of the rescuers previously took part in the complicated 2018 cave rescue in northern Thailand that saved 12 schoolboys and their soccer coach from a flooded cave.

Laos’s Rescue Volunteer for People group posted on its Facebook page that heavy rain caused “massive amounts of water” to flow down into the area, forcing them to suspend operations on Sunday (May 31, 2026) night.

Kengkaj Bongkawong, head of the Thai group Metta Tham Rescue Kalasin, said that the workers are also looking for air shafts from above that may provide access into the cave.

Rescuers believe the two missing people are trapped deeper inside the cave than the location where the five survivors were originally found on Wednesday (May 26, 2026). But the passage into that area is said to be very narrow and heavily flooded.

The villagers reportedly entered the cave nearly 2 weeks ago to look for valuable minerals such as gold before being trapped by a flash flood that blocked their way out. One other villager escaped and alerted the authorities.

The first man was safely extracted on Friday (May 29, 2026), guided through a narrow flooded passage by an expert diver. The remaining four left the cave on Saturday (May 29, 2026) after the water receded enough for them to walk out on their own, rescuers said.

A search operation for seven villagers trapped inside a flooded cave in central Laos entered its seventh day on Tuesday (May 26, 2026), as rescuers encountered difficult terrain and weather as they tried to reach the group whose condition remains unknown.

The villagers entered the cave in Xaisomboun Province on May 19, but heavy rain triggered flash flooding that blocked the exit, according to Lao and Thai rescue teams involved in the operation.

The Lao organisation Rescue Volunteer for People, which is working closely with the local authorities, posted on its Facebook page that Tuesday’s (May 26, 2026) operation plan includes exploring air shafts above the cave in hopes of identifying possible access points and locating the trapped people.

Rescuers from neighbouring Thailand also arrived at the site over the weekend to assist the operation.

Challenging conditions hamper rescue efforts

According to rescuers, divers have navigated about 100 metres into the flooded, narrow cave. They believe the villagers may be trapped about 30 metres beyond the furthest point currently accessible. They are working to pump water out of the cave to aid the search efforts.

The site is in a remote area in Xaisomboun Province’s Longcheng district, which is about 120 kilometres (75 miles) north of the capital, Vientiane. Rescuers at the scene have detailed on social media the challenging mountainous terrain and heavy rain that are hampering the operation.

Videos shared online by Thai rescuers showed that reaching the cave’s entrance requires a steep hike of roughly 4 kilometres (2.5 miles). The entrance is also steep and rocky, and barely wide enough for a single person to climb through at a time.

Inside, rescuers must go through muddy passageways, flooded sections and narrow tunnels that forced them to crawl forward.

Villagers were reportedly mining

There has been no official confirmation on why the villagers went into the cave, although the rescuers involved said that they went in to look for gold deposits.

Bounkham Luanglath of the Lao rescue group has told The Associated Press that the cave was frequented by local residents looking for gold, although authorities had repeatedly warned them against entering the cave out of safety concerns.

The average per capita income in Laos of about $2,000-2,500 is among the lowest in Southeast Asia, and it is even lower in underdeveloped rural areas.

Laos is not known as a major gold producer, but its mining industry is sizable considering the country’s developing economy. The mining sector is fueled by foreign direct investment, largely from neighbouring Thailand and China. Copper is a major export, and mining for rare earth elements, needed for most modern technologies, has become more common in Laos recently.

The Lao Foreign Ministry on Tuesday (May 26, 2026) said it has no official information to share with the media. The Southeast Asian nation is a one-party communist State with no organised opposition, and the government keeps a tight lid on information.

Cave rescues are risky business

The news quickly drew headlines in Thailand because of its resemblance to the dramatic 2018 cave rescue in northern Thailand, where 12 boys and their soccer coach were trapped for more than two weeks before being safely rescued in an operation that became a global sensation. A former Thai Navy SEAL diver was killed during the search and rescue effort.

A new tragedy occurred earlier this month, with five Italian divers found dead after they went missing while diving into a cave in the Maldives. A Maldivian military diver who was part of the recovery team was killed during the high-risk operation to retrieve their bodies.

A major health risk of being trapped in a cave is cold conditions, which can quickly lead to hypothermia. The body can cope for weeks without food, but clean water is necessary to prevent dehydration. A contaminated water supply could cause diarrhoea, hastening dehydration.

Declining oxygen levels cause symptoms similar to altitude sickness and, in the long run, can damage the lungs and other organs, while carbon dioxide buildup causes exhaustion and eventual unconsciousness.

Constant darkness disrupts time perception and the body’s circadian rhythms. It also causes extreme sensitivity when the eyes have to adjust again to light.