"Important both for its high biodiversity and for its karst features, Gunung Mulu National Park, on the island of Borneo in the State of Sarawak, is the most studied tropical karst area in the world. The 52,864-ha park contains seventeen vegetation zones, exhibiting some 3,500 species of vascular plants. Its palm species are exceptionally rich, with 109 species in twenty genera noted. The park is dominated by Gunung Mulu, a 2,377 m-high sandstone pinnacle. At least 295 km of explored caves provide a spectacular sight and are home to millions of cave swiftlets and bats. The Sarawak Chamber, 600 m by 415 m and 80 m high, is the largest known cave chamber in the world.
The concentration of caves in Mulu's Melinau Formation with its geomorphic and structural characteristics is an outstanding feature which allows a greater understanding of Earth's history. The caves of Mulu are important for their classic features of underground geomorphology, demonstrating an evolutionary history of more than 1.5 million years. One of the world's finest examples of the collapse process in Karstic terrain can be also found. GMNP provides outstanding scientific opportunities to study theories on the origins of cave faunas. With its deeply-incised canyons, wild rivers, rainforest-covered mountains, spectacular limestone pinnacles, cave passages and decorations, Mulu has outstanding scenic values. GMNP also provides significant natural habitat for a wide range of plant and animal diversity both above and below ground. It is botanically-rich in species and high in endemism, including one of the richest sites in the world for palm species. Source: UNESCO World Heritage
I visited Mulu Caves, flying from Miri. This is a UNESCO World Heritage Site. Incredible large caves with the Mount Mulu and the Pinnacle, located in Sarawak State in Borneo Island.
Postcard 1 Multiview of Mulu. Thanks to Sofia of Sarawak, Malaysia.
Postcard 2 - Deer Cave, Mulu Caves of Gunung Mulu National Park (1013 - 2000)
Matching Mulu Cave stamp used. Thanks to MSC who was visiting Mulu Caves.
Postcard 3 - The Pinnacle, Gunung Mulu National Park
Karst formation of the Pinnacle can viewed from the airplane when flying into Mulu. Mailed from Miri, Sarawak.
Postcard 4 - Mulu Caves, Gunung Mulu National Park
One of caves have an Abraham Lincoln's profile. Matching stamp of Gunung Mulu - Mount Mulu. Mailed from Kuching, Sarawak.