Cavers in Hang Roc (Ruc Mon) cave in Phong Nha, Quang Binh, Vietnam, Indochina, Southeast Asia, Asia

photography colour colour image color color image horizontal horizontal image two people male men asian appearance 40 44 years 55 59 years travel travel destination travel destinations underground hang roc ruc mon phong nha quang binh vietnam indochina southeast asia south east asia southeast asian south east asian asia asian geological feature rock rock formation illuminated lit lit up subterranean cavern adventure the great outdoors cave caver caucasian appearance mid adult x 2018m2 x printready