The Mulu Pinnacles are one of the most iconic natural formations in Gunung Mulu National Park, a UNESCO World Heritage Site in Sarawak, Malaysia. Rising dramatically from the rainforest canopy on the slopes of Gunung Api, these razor-sharp limestone spires form one of the most striking landscapes in Southeast Asia.

Reaching the Pinnacles viewpoint requires a challenging jungle trek through the national park, making it one of the most rewarding adventures for hikers visiting Mulu. The journey takes travellers deep into the rainforest before ascending steep limestone terrain to a viewpoint overlooking hundreds of jagged stone spires rising above the forest.

Highlights

• Trek deep into the rainforest of Gunung Mulu National Park
• Reach the famous Pinnacles viewpoint on Gunung Api
• Witness hundreds of sharp limestone spires rising from the forest canopy
• Experience one of Borneo’s most challenging jungle treks
• Stay overnight at Camp 5, located deep inside the national park
• Travel along the Melinau River, passing the Batu Bungan Penan Settlement

The Mulu Pinnacles Trek

The Mulu Pinnacles are dramatic limestone spires located on the slopes of Gunung Api in Gunung Mulu National Park. Some of these jagged formations rise up to 40 to 45 metres, creating a striking landscape of razor-sharp stone towers above the surrounding rainforest.

These formations developed over millions of years as rainfall and underground water gradually eroded the limestone mountain, leaving behind the sharp spires visible today.

Reaching the Pinnacles viewpoint requires a steep climb through rugged limestone terrain. The trail includes sections equipped with ropes and ladders to assist hikers as they ascend the slopes of Gunung Api.

From the viewpoint, hikers are rewarded with the iconic view of hundreds of limestone spires rising dramatically above the forest canopy and surrounding them.

How to Get to Mulu Pinnacles

The trek begins at Gunung Mulu National Park headquarters.

Visitors first travel by boat along the Melinau River, which passes limestone cliffs and often stops at Batu Bungan Penan Settlement, where visitors can browse handicrafts made by the local Penan community.

From the river landing point, hikers continue on foot through the rainforest to Camp 5, where they stay overnight before attempting the climb up Gunung Api.

Best Time to Climb Mulu Pinnacles

The Mulu Pinnacles trek can be attempted throughout the year, as Gunung Mulu National Park remains open year-round.

Historically, the period between March and October tends to be slightly drier based on past weather data, although the difference in rainfall is not particularly significant. As a tropical rainforest destination, rain can occur in any month.

Even when showers occur, rainfall is often short and intermittent rather than lasting the entire day. However, hikers should still be prepared for slippery trail conditions, especially during or after rain.

Other Experiences in Gunung Mulu National Park

The Mulu Show Caves are the most accessible caves in the park and include Deer Cave, Lang Cave, Wind Cave, and Clearwater Cave. These caves allow visitors to explore vast limestone chambers and underground rivers through guided boardwalk tours.

Located along the Melinau River, the Batu Bungan Penan Settlement is a small village where visitors can learn about the traditional forest culture of the Penan community and browse handmade handicrafts.