Mount Trusmadi or Trus Madi ( ms, Gunung Trusmadi) is a mountain located at the

Interior Division The Interior Division ( ms, Bahagian Pedalaman) is an administrative division of the state of Sabah, Malaysia. It occupies the southwest portion of Sabah, bordered by the neighbouring state of Sarawak on its west. With an area of 18,298 square ki ...

Sabah Sabah () is a state of Malaysia located in northern Borneo, in the region of East Malaysia. Sabah borders the Malaysian state of Sarawak to the southwest and the North Kalimantan province of Indonesia to the south. The Federal Territory ...

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Mal ...

. It is considered as the second highest mountain in both Sabah and Malaysia at , after

Mount Kinabalu Mount Kinabalu ( ms, Gunung Kinabalu, Dusun: ''Gayo Ngaran or Nulu Nabalu'') is the highest mountain in Borneo and Malaysia. With an elevation of , it is third-highest peak of an island on Earth, and 20th most prominent mountain in the wor ...

with Trusmadi offering a tougher climbing challenge than the latter.

Geology

The mountain geology comprises tertiary formation of

mudstone Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology.' ...

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especiall ...

and

argillite :''"Argillite" may also refer to Argillite, Kentucky.'' Argillite () is a fine-grained sedimentary rock composed predominantly of indurated clay particles. Argillaceous rocks are basically lithified muds and oozes. They contain variable amounts ...

with subordinate beds of

quartzite Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tec ...

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicat ...

siltstone Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, ...

and

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms w ...

breccia Breccia () is a rock composed of large angular broken fragments of minerals or rocks cemented together by a fine-grained matrix. The word has its origins in the Italian language, in which it means "rubble". A breccia may have a variety of ...

Biodiversity

The mountain area is located within the Trusmadi Forest Reserve where it supports a wide range of unique flora and fauna, including ''

Nepenthes macrophylla ''Nepenthes macrophylla'' , the large-leaved pitcher-plant,Phillipps, A. & A. Lamb 1996. ''Pitcher-Plants of Borneo''. Natural History Publications (Borneo), Kota Kinabalu. is a tropical pitcher plant known only from a very restrictive elevation ...

'', a species of pitcher plant. The

natural hybrid In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in ...

'' Nepenthes × trusmadiensis'' is named after the mountain. In 1999, a small-scale expedition on the mountain biodiversity was conducted through a collaboration between

Sabah Museum The Sabah Museum ( Malay: ''Muzium Sabah'') is the state museum of Sabah, Malaysia. It is sited on of land at Bukit Istana Lama in Kota Kinabalu, the state capital. History The original Sabah Museum location was established on 15 July 1965 ...

and

Louisiana State University Louisiana State University (officially Louisiana State University and Agricultural and Mechanical College, commonly referred to as LSU) is a public land-grant research university in Baton Rouge, Louisiana. The university was founded in 1860 n ...

Museum of Natural Science with various

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

species are found within the area.

Features

It is one of Sabah's

ecotourism Ecotourism is a form of tourism involving responsible travel (using sustainable transport) to natural areas, conserving the environment, and improving the well-being of the local people. Its purpose may be to educate the traveler, to provide fund ...

and mountain climbing destinations. There are three climbing trails towards the mountain summit, namely from Wayaan Kaingaran (

Tambunan Tambunan ( ms, Pekan Tambunan) is the capital of the Tambunan District in the Interior Division of Sabah, Malaysia. Its population was estimated to be around 35,667 in 2010. It is located 80 kilometres east of the state capital, Kota Kinabalu ...

), Wayaan Mastan (

Keningau Keningau ( ms, Pekan Keningau) is the capital of the Keningau District in the Interior Division of Sabah, Malaysia. It is the fifth-largest town in Sabah, as well one of the oldest. Keningau is between Tambunan and Tenom. The town had an es ...

) and Wayaan Mannan (Sinua, Sook, Keningau). Both Wayaan Kaingaran and Mastan are accessible only with

4WD Four-wheel drive, also called 4×4 ("four by four") or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer ca ...

while Wayaan Mannan has a good access road.

References

{{DEFAULTSORT:Trusmadi, Mount Trusmadi Protected areas of Sabah Hiking trails in Malaysia Trusmadi