Nai Wong Tai (ในวงใต้) is a subdistrict of La-Un in Ranong. Its villages include Buri Ram, Noen Thong and Thap Nuea, identified separately from the communities of neighbouring Nai Wong Nuea in the local government's administrative plan.
The Fine Arts Department describes the wider Nai Wong landscape as enclosed by mountains, with limestone hills, caves, foothill slopes and valley plains. Archaeological research has documented prehistoric and early historic evidence in the two Nai Wong tambons. That research context does not establish public cave access: individual sites and any visiting arrangements must be checked separately.
