Gunung Mulu National Park: A Traveller's Guide

Gunung Mulu National Park, located in the Miri Division of Sarawak, is one of Malaysia's most spectacular natural treasures. Recognised as a UNESCO World Heritage Site for its exceptional biodiversity and unique karst landscapes, the park draws travellers from across the globe to witness its colossal cave systems and ancient rainforests.

The park is dominated by three towering mountains: Gunung Mulu, Gunung Api, and Gunung Benarat. Beyond the peaks, the landscape is defined by vast underground passages and lush jungle, providing a home to thousands of plant species, hornbills, and millions of bats that put on a nightly aerial display. Whether you are an avid trekker or a nature enthusiast, Mulu offers an unforgettable experience in the heart of Borneo.

Key Takeaways

• The park requires the purchase of a 5-day entry pass, which provides access for up to five days.
• Most activities outside the immediate Park Headquarters area must be conducted with a licensed guide.
• Key sights include the massive Deer Cave, the stunning rock formations of Lang Cave, and the canopy walk at Mulu Tree Top Tower.
• The best time to visit is during the drier season, typically between June and September.

Background and Setting

Inscribed as a UNESCO World Heritage Site in 2000, Gunung Mulu National Park is celebrated for its karst features and immense biological diversity. It is home to over 3,500 species of vascular plants and a complex ecosystem that has evolved over millions of years. The park is deeply connected to the local communities, including the Penan, who have a long history of living in harmony with the forest.

The park is remote and there are no direct roads leading to it. Most travellers access Mulu by flying into the local airport via MASwings, with connections available from Miri, Kuching, or Kota Kinabalu. Once you arrive, the park headquarters serves as the central hub for all excursions and information.

When to Go

While the park is open year-round, the drier season from June to September is often preferred for trekking and outdoor activities. During these months, the trails are generally more accessible and the weather is more predictable. Regardless of when you visit, it is essential to check current park regulations and booking requirements, as many activities require advance arrangements and a licensed guide to ensure safety and environmental protection.

Top Things to Do in Gunung Mulu National Park

Jump to a spot

• Gunung Mulu National Park
• Deer Cave
• Clear Water Cave
• Lang Cave
• Cave of The Winds
• Mulu Tree Top Tower

Gunung Mulu National Park

The park offers a variety of experiences, from challenging treks up Gunung Api to view its famous 45-meter-tall razor-sharp limestone spires, to cultural interactions with the local Penan community where you can observe traditional basket weaving. The Park Headquarters area itself features accessible walking trails that allow you to explore the rainforest at your own pace.

Area: Gunung Mulu National Park, near Gunung Api and the Melinau River.

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Deer Cave

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Deer Cave is renowned for being one of the world's largest cave passages. It is particularly famous for the nightly exodus of millions of bats that fly out in search of food, a spectacle that requires a licensed guide to witness safely.

Area: Gunung Mulu National Park, near Park Headquarters.

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Clear Water Cave

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As one of the longest cave systems in Southeast Asia, Clear Water Cave is a highlight for many visitors. It is typically reached via a boat trip along the Melinau River and features a stunning, crystal-clear underground river flowing through the limestone.

Area: Gunung Mulu National Park, along the Melinau River.

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Lang Cave

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Lang Cave is celebrated for its intricate and beautiful rock formations, including delicate stalactites and stalagmites. It is often visited in combination with the nearby Deer Cave, making it a convenient stop during your cave explorations.

Area: Gunung Mulu National Park, near Park Headquarters.

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Cave of The Winds

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Named for the refreshing, cool breezes that blow through its chambers, the Cave of The Winds is a fascinating geological site. It is usually visited as part of a boat excursion along the Melinau River, providing a pleasant respite from the tropical humidity.

Area: Gunung Mulu National Park, along the Melinau River.

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Mulu Tree Top Tower

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The Mulu Tree Top Tower offers an elevated canopy walk that provides a unique perspective of the primary rainforest. This activity requires a guide to ensure you can safely navigate the walkway and appreciate the diverse flora and fauna found in the upper reaches of the trees.

Area: Gunung Mulu National Park, near Park Headquarters.

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Conclusion

A trip to Gunung Mulu National Park is a journey into one of the world's most significant natural landscapes. By planning your transport and guided tours in advance, you can ensure a smooth and rewarding experience exploring these iconic caves and rainforest trails.