[Main] [Geology] [Dao] [Sai Ngam] [Wang Daeng] [Jowlarm] [Ban Nam Mut]

Geology of Thung Salaeng Luang NP


  • Geology
  • Outlines of caves
  • Geological sketch map

    For the next four days, our base camp was the small ranger station Ban Mung at the western slopes of Thung Salaeng Luang national park, directly situated at the cliffline of a huge karst tower. The landscape in this part of the park is characterized by the smooth, rounded relief of upper and lower Jurassic sandstones. Along the southwestern tip of the park, Permian limestones outcrop, here the morphology is dominated by steep, rugged karst towers overlooking the flat outwash plains with their patchwork of fields. As the sandstone areas are often covered by secondary forest, while the more rugged and dissected limestone areas are still the habitat of priscine forests with their denser vegetation and their darker colours, the change in vegetation is a first indicator of the geological setting. Some isolated karst towers left over by the backward erosion of the main plateau are looming over the flat fields, adding to the pittoresque character of the landscape. However, these relatively pure limestone hills are an easy target for the local mining industry, thus exploitation of some towers has left some ugly scars around.

    A geological sketch map showing the locations of the caves Tham Dao (1), Tham Phra Sai Ngam (2), and Tham Phra Wang Daeng (3) is shown next.


    Outline of cave systems

    The outlines of the three caves surveyed are shown (in black) on the next map, together with the limestone outcrop (grey) and some rivers (blue) draining the plateau.