BANGKOK (AP) — Rescuers tried to reach seven villagers trapped inside a flooded cave in Laos for the seventh day on Tuesday, with difficult terrain and weather impeding their efforts. There has been no contact with them since they became trapped. The villagers entered the cave in Xaisomboun province on May 19, but heavy rain triggered flash flooding that blocked their exit, according to Lao and Thai rescue teams involved in the operation.The Lao organization Rescue Volunteer for People, which is working closely with the local authorities, posted on its Facebook page that Tuesday’s operation plan included exploring air shafts above the cave in hopes of identifying possible access points and locating the trapped people.Rescue workers from neighboring Thailand arrived at the site over the weekend to assist the operation. Those helping out include divers from several nations who took part in the complicated 2018 rescue in northern Thailand of 12 schoolboys and their soccer coach who were trapped for more than two weeks in a cave before being safely extricated.

Challenging conditions hamper rescue effortsAccording to rescuers, divers have navigated about 100 meters (330 feet) into the flooded, narrow cave. They believe the villagers may be trapped about 30 meters (100 feet) beyond the furthest point currently accessible and are also working to pump water out of the cave to aid the rescue operation.The site is in a rugged, remote area in Xaisomboun province’s Longcheng district, which is about 120 kilometers (75 miles) north of the capital, Vientiane. Rescuers at the scene have detailed on social media the challenging mountainous terrain and heavy rain that is hampering their work.Videos shared online by Thai rescuers showed that reaching the cave’s entrance requires a steep hike on foot of roughly 4 kilometers (2.5 miles). The entrance is also steep and rocky, and barely wide enough for a single person at a time to climb through.