"Poonsak Woongsatngiem, a rescue official with Thailand’s interior ministry, told the Guardian the water had been reduced by 40% in the past few days, clearing a 1.5km stretch of dark, jagged and muddy cave channels that the boys would need to traverse."
"The focus of Thursday’s operations is a third major basin along the route where water still reaches to the ceiling."
"Clearing the third basin would leave another 2.5km of path to the boys, whose ages range from 11 to 16. A Chinese diver at the site, Wang Ying Jie, said about half that remaining path would be walkable in the right conditions; the maximum water depth they would need to cross is about six metres."
"Wang said most of the boys remained in good health but three had intestinal issues and were in some pain."
"Officials were also scouring the jungle above the complex to find new openings that could be drilled to extract the boys more easily. The children were breathing, he said, so there was very likely a shaft somewhere to the top.“We have around 20 to 30 teams surveying on top to find the closest and most precise spot,” he said."
Thai cave rescue: army drains site in bid to free boys before monsoon