Gunung Mulu National Park


World Heritage Identification Number: 1013

World Heritage since: 2000

Category: Natural Heritage

Transboundary Heritage: No

Endangered Heritage: No

Country: 🇲🇾 Malaysia

Continent: Asia

UNESCO World Region: Asia and the Pacific

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Gunung Mulu National Park: A Tropical Karst Haven

Nestled within the heart of Borneo, the Gunung Mulu National Park (often abbreviated as Mulu National Park) stands as a testament to the wonders of nature and the intricate beauty of tropical karst landscapes. Established in 1974 and designated as a UNESCO World Heritage Site in 2000, this pristine protected area spans an expansive 52,864 hectares, making it one of the largest national parks in Malaysia.

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UNESCO Description of the World Heritage Site

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.

UNESCO Justification of the World Heritage Site

Criteria (vii), (viii), (ix) and (x): 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.

Encyclopedia Record: Gunung Mulu National Park

The Gunung Mulu National Park, also known simply as the Mulu National Park is a national park in Miri Division, Sarawak, Malaysia. It is a UNESCO World Heritage Site that encompasses caves and karst formations in a mountainous equatorial rainforest setting. The park is famous for its caves and the expeditions that have been mounted to explore them and their surrounding rainforest, most notably the Royal Geographical Society Expedition of 1977–1978, which saw over 100 scientists in the field for 15 months. This initiated a series of over 20 expeditions now named the Mulu Caves Project.

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Additional Site Details

Area: 52,864 hectares

UNESCO Criteria: (vii) — Contains superlative natural phenomena or beauty
(viii) — Outstanding example representing major earth stages
(ix) — Outstanding example representing ecological and biological processes
(x) — Contains most important habitats for biodiversity

Coordinates: 4.13333 , 114.91667

Image

Image of Gunung Mulu National Park

© Juanita at the Japanese wikpedia, CC BY-SA 3.0 Resized from original. (This derivative is under the same CC BY-SA license.)

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Nearby World Heritage Sites

The Archaeological Heritage of Niah National Park’s Caves Complex
131 km — Malaysia
Kinabalu Park
293 km — Malaysia
Tubbataha Reefs Natural Park
766 km — Philippines
Puerto-Princesa Subterranean River National Park
803 km — Philippines

Country Information: Malaysia

Flag of Malaysia

Official Name: Malaysia

Capital: Kuala Lumpur

Continent: Asia

Population (2024): 35,557,673

Population (2023): 35,126,298

Population (2022): 34,695,493

Land Area: 328,550 sq km

Currency: Malaysian ringgit (MYR)

Country Data Sources

Last updated: January 18, 2026

Portions of the page Gunung Mulu National Park are based on data from UNESCO — World Heritage List Dataset and on text from the Wikipedia article Gunung Mulu National Park, licensed under CC BY-SA 4.0. Changes made. Additional original content by World Heritage Explorer (WHE), licensed under CC BY-SA 4.0. WHE is not affiliated with UNESCO or the World Heritage Committee. Legal Notice. Privacy Policy.

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