After a week of desperate international effort, five of seven Lao villagers trapped in a flooded cave system have been brought to safety, but the joy is tempered by the continuing ordeal of two young men still missing deep underground. The rescued men, recovered from a narrow shaft roughly 300 metres from the cave mouth in central Xaisomboun province, were found huddled together after being cut off by a sudden flash flood on 20 May while prospecting for gold. Their emergence — partly assisted by divers and partly, some reports suggest, under their own power after water was pumped from the chambers — was hailed as a testament to the resilience of men accustomed to the harsh terrain.

Yet the drama is far from over. Two men, identified locally as Bay, a teenager, and Lup, 33, entered the cave independently of the group that survived and remain unaccounted for in the deepest recesses of the labyrinthine system, which plunges more than 110 metres below the mountain. Rescue divers from Finland, Malaysia, Japan, Indonesia, France and Australia, working alongside Thai and Laotian teams, have explored almost the entire known network, but a new, risky theory has emerged: a narrow crack in the fifth chamber may lead to a sixth, unexplored cavity where the pair could be trapped. Their chances, however, are being eroded by the return of the monsoon rains that triggered the crisis. Finnish diver Mikko Paasi warned that water had already refilled the second chamber, making further dives impossible until pumps lower the level.

In a remarkable turn, the survivors, recuperating in a Vientiane hospital, are now providing critical intelligence to the searchers. One spoke of “waiting to die” in the flooded darkness, while others have delivered what a Lao rescue group called “substantial” details about the cave’s inner geography — a grim but invaluable cartography of their prison. Their accounts have shaped the plan for the final, most dangerous phase of the operation. Analysts in Bangkok note that the Lao authorities’ willingness to accept help from a sprawling multinational team reflects a pragmatic shift in a nation still haunted by the 2018 Tham Luang cave rescue of a Thai football team, which drew global attention but also criticism over reliance on foreign expertise.

Viewed from European capitals, the operation has underscored the niche but vital role of specialist cave divers, often volunteers, who are called to such disasters with increasing frequency as extreme weather events multiply. The self-extrication of several men, described by Australian diver Josh Richards as “they crawled out by themselves, that says a lot about them,” has also highlighted the thin line between rescue and survival in environments where formal intervention can only do so much. As pumps labour and divers await a weather window, the families of Bay and Lup cling to hope that the mountain’s depths might yet yield a miracle.

For now, the search is suspended, and the monsoon’s rhythm will dictate the next move. The two missing men, if alive, face a diminishing air supply and rising waters. The human cost of artisanal mining — a perilous livelihood across the Lao highlands — is once again laid bare. International teams remain on standby, but the cruel arithmetic of cave rescues offers little comfort: in the 2018 Tham Luang operation, every trapped boy was saved; here, the locals who know the rock best are already counting the missing.