Source: Reuters; Thai Navy Seals; Survey conducted by the Association Pyreneenne de Speleologie (1986-1987); Tham Luang Rescue Centre; Ruamkatanyu Foundation; Centres for Disease Control and Prevention (CDC)
By Chris Inton, Jin Wu and Weiyi Cai | REUTERS GRAPHICS

Additional reporting by: Panu Wongcha-um, Chayut Setboonsarng and Amy Lefevre | Additional editing by Darren Schuettler and Paul Tait