The Kilim Karst Geoforest Park is formed from 7 reserved forests inclusive of the mangrove forest. The rocks in this geoforest park are formed from the limestones aged 350 – 490 million years old. Karst is the uneven shape of the earth’s surface that is formed from the limestone. The sharp peak on the many rocks here are formed in affect of the acidic rainwater that fell on the limestone causing the dissolvent on the fracture and the layers of rocks leaving the sharp peaks on the rocks here. There are several geosites that are high in value and would be interesting to explore. Among them are the Gua Kelawar, Gua Langsir, Pulau Anak Tikus, Teluk Cina Mati, Tasik Langgun, Teluk Mempelam, Gua Cherita, Gua Dedap and Tanjung Rhu.

  • Kilim Karst consists of Setul Formation (dark grey coloured limestones) which are formed from limestones.
  • It is formed from 7 different reserved forests which are the Hutan Simpan Pulau Langgun, Hutan Simpan Kuala Kisap, Hutan Simpan Tanjung Dagu, Hutan Simpan Gua Cherita, Hutan Simpan Ayer Hangat, Hutan Simpan Selat Panchur and Hutan Simpan Pulau Timun.
  • The word ‘Karst’ carries the meaning of the shape morphology or the uneven landscape, which is normal for limestones, like caves and sea stacks.
  • The Geosites in this area are:
       – Sungai Kilim Geosite -> Gua Kelawar, Gua Langsir, Gua Buaya
       – Pulau Langgun -> Pulau Tanjung Dendang Geosite ( Pulau Anak Tikus, Teluk    China Mati, Tasik Langgun, Teluk Mempelam
       – Tanjung Rhu Geosite -> Gua Cherita, Gua Dedap, Tanjung Rhu
  • Surrounded by Mangrove Swamp Forest with the dominant mangrove species like bakau kurap (Rhizophora mucronata) and bakau minyak (Rhisophora apiculate).
  • There are 3 different species of insects-eating bats from the Bat Cave which are the kelawar ladam bulat terbesar (Hipposideros armiger), kelawar ladam bulat besar (Hipposideros larvatus) and kelawar jari panjang (Miniopterus medius).
  • Pulau Anak Tikus is a special location where fossils (carcass or traces of animals, plants and other life forms that has been preserved since the stone age) can be found in this area, for example; gastropod fossils and brachiopods fossils. This area is also known as a habitat for eagles. There are 2 types of eagles that can be found here which are; helang merah – red eagle (Haliastur indus) and helang laut – sea eagle (Haliaeetus leucogaster).