On 23 June 2018, 13 visitors disappeared in the Tham Luang Nang Non Cave in the Dai Nang Non region in the northern border zone of Thailand. The missing people are young between the ages of 11 and 25, a local youth football team and their coach.
The total length of the cave is about 10 km, it has several entrances. The cave is a complex, active karst cave with a creek, a part of which intended for tourists was equipped with sidewalks, stairs and railings.
The entrances were not closed, but information and danger signs were displayed. The main danger of the cave is that, unlike other karst areas, the possible floods here do not last for hours or days, but the flooding can persist throughout the rainy season. Getting the missing football team out of the cave was also prevented by the fact that some of the passages used to go inwards were submerged due to the heavy rains, making it impossible for the team to get out due to a lack of quailification and equipments