About Thung Bu Lang Subdistrict
Thung Bu Lang (ทุ่งบุหลัง), often written Thung Bulang, is a subdistrict of Thung Wa District in Satun. Its communities include Ban Thung Thanan, while coastal areas lie within the wider locality.
The Department of Mineral Resources identifies Khao Thanan as a distinctive limestone hill with fossil-bearing rock and caves. The local authority also uses the site for community events. Separately, marine-resource records document shoreline change around Ban Thung Sabo; those historical findings show why a coastal approach should be checked locally rather than assumed unchanged.
Plan around the actual hill entrance, community or shoreline destination. Confirm event dates and any guided access with the responsible organiser. Avoid removing fossils or entering caves without permission and suitable local guidance. The tambon map point is not a universal trailhead or departure point.