Mulu Airport

Ancient caves and jungle adventures await in Malaysian Borneo.

Mulu, officially known as Gunung Mulu National Park, is a UNESCO World Heritage Site nestled deep in the rainforests of Sarawak, Malaysian Borneo. It is renowned for its extraordinary cave systems, dramatic karst landscapes, and rich biodiversity that draws scientists and adventurers alike.

The park is home to some of the world's largest caves, including Sarawak Chamber — the largest cave chamber on Earth by area. Beyond the caves, Mulu offers canopy walks, jungle treks, and pristine rivers teeming with wildlife. The remote setting ensures an experience that feels genuinely off the beaten path.

Infrastructure within the park is well-organized, with a central park headquarters, licensed guides, and comfortable lodges. Despite its remoteness, Mulu is accessible and suits both casual visitors and serious spelunkers or trekkers seeking multi-day expeditions.

• •Sarawak Chamber — largest cave chamber on Earth by area.
• •Deer Cave — home to millions of bats and a stunning bat exodus at dusk.
• •Lang Cave — beautifully lit stalactites and stalagmites in an intimate setting.
• •Wind Cave — remarkable cave formations cooled by natural air currents.
• •Mulu Canopy Skywalk — 480-meter elevated walkway through the jungle canopy.
• •Pinnacles Trek — dramatic limestone spikes rising from the forested mountainside.

Getting around: Mulu has no roads connecting it to the outside world; the primary way to arrive is by MASwings flight from Miri or Kota Kinabalu. Within the park, movement is on foot along well-marked boardwalks and jungle trails, or by longboat along the Melinau River to reach more remote cave systems and trailheads. All cave and trekking tours require a licensed park guide, who typically leads groups directly from the park headquarters.

Best time: The best time to visit Mulu is between May and September, when rainfall is somewhat lower and trails are more manageable, though the park is open and accessible year-round.

Local food: Don't miss Sarawak laksa and midin fern stir-fry at the park's canteen or nearby longhouses, offering an authentic taste of indigenous Sarawakian cuisine.

This guide is provided for general information only. Verify details locally before making travel decisions.