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Bukit Lesong

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Mountain
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Bukit Lesong (Brunei)

Weather…

Rising to around 1,000 meters above sea level, Bukit Lesong is situated deep in the heart of Ulu Temburong National Park in Brunei. This mountain is a symbol of the park's untouched wilderness, completely surrounded by one of the oldest rainforests on Earth. Access to Bukit Lesong is extremely restricted and mainly reserved for scientists working at the nearby Kuala Belalong Field Studies Centre. The trek to the summit is a grueling multi-day expedition through rugged terrain, which is rich with wildlife such as gibbons, macaques, and a wide variety of bird species. The name 'Lesong' means 'mortar' in Malay, possibly alluding to a local legend or a geographical feature in the area. The slopes of the mountain are crucial to the water catchment for the Temburong River.

Best time to visit & climate

The most pleasant time to visit is Feb, Mar, Aug.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °C252525262626252525252525
Rain mm305161166223242248238224240306315339

📋 Practical info

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Getting there
Accessing this section of the national park usually requires a boat trip originating from Bangar, followed by a jungle trek led by official rangers or guides.
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Best season
The relatively lower-rainfall months between March and May are widely considered the best time to explore the dense forests under more moderate conditions.
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Terrain & paths
The terrain is marked by dense, nearly impenetrable primary forest, steep slopes, and deep ravines, demanding very good physical condition and surefootedness.
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What to bring
Complete tropical expedition gear, including a reliable water filter, leech socks, an emergency bivouac sack, and strong mosquito protection, is highly recommended.
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Parking
Travel to the boat departure point is mostly via public transit or organized transfer; private vehicles are typically left far behind in more developed areas.
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Safety
Due to the extreme remoteness, a guided tour is strictly essential; never underestimate the immense heat and oppressively high humidity found deep in the primary forest.
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Time needed
Excursions to this mountain, located deep within the national park, typically span several days and require overnight stays in basic, rustic jungle camps.

Geography

Coordinates
4.45000, 115.20000

Facts

  • Habitat for many endemic species.
  • Accessible only by boat and on foot.

Explore nearby

Notable places around

Ulu Temburong National ParkUlu Temburong National Park2 km · NExplore →
Bukit BelalongBukit Belalong6 km · SExplore →
Ulu Temburong Canopy WalkwayUlu Temburong Canopy Walkway7 km · SWExplore →
Batu ApoiBatu Apoi8 km · WExplore →
Temburong Stone QuarryTemburong Stone Quarry9 km · SWExplore →
Bukit PagonBukit Pagon9 km · NEExplore →
Bukit Pagon Cloud Forest ZoneBukit Pagon Cloud Forest Zone10 km · NEExplore →
Bukit RetakBukit Retak11 km · NEExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

Vehicle
Only stops with (optional):

© OpenStreetMap contributors · OpenRouteService

Sights nearby

Frequently asked questions

What shape is the relief of Bukit Lesong?
It resembles an inverted mortar (Lesong), which gave it its name.
Where is this hill located?
In the Temburong District, in a densely forested area.
Can you hike up Bukit Lesong?
There are no official trails; the ascent is difficult and trackless.
How high is it?
It is about 450 meters high.
When is the best time to visit the area?
In the dry season (February to April) to avoid the worst rainfalls.
Bukit Lesong: where is it located?
Bukit Lesong is located in Brunei.
Bukit Lesong: when is the best time to visit?
The most pleasant time to visit is Feb, Mar, Aug.
Bukit Lesong: why is it worth visiting?
Rising to around 1,000 meters above sea level, Bukit Lesong is situated deep in the heart of Ulu Temburong National Park in Brunei.
View on map → The Top 50 Attractions → OpenStreetMap →
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Nearby cities

Bangar — Bukit Lesong (Brunei)
Bangar
The isolated administrative center of Temburong District, accessible mainly by boat or the new bridge.
Batu Apoi — Bukit Lesong (Brunei)
Batu Apoi
A significant area in Temburong that serves as a gateway to the pristine rainforests.
Amo — Bukit Lesong (Brunei)
Amo
A remote village providing an authentic glimpse into the traditional lifestyle of the indigenous people.
Labu — Bukit Lesong (Brunei)
Labu
A village situated near the dense mangrove forests of the Temburong District.

History & landmarks

Ulu Temburong Canopy Walkway — Bukit Lesong (Brunei)
Ulu Temburong Canopy Walkway
A breathtaking metal structure deep in the pristine rainforest, offering spectacular views above the canopy of the national park.

Nature

Temburong River — Bukit Lesong (Brunei)
Temburong River
A wild and scenic river in the Temburong district, often the only transportation route to the deeper parts of the rainforest.

More places

Ulu Temburong National Park — Bukit Lesong (Brunei)
Ulu Temburong National Park
The first national park in Brunei, known for its pristine rainforest and spectacular canopy walkway.
Bukit Belalong — Bukit Lesong (Brunei)
Bukit Belalong
A mountain in the Temburong jungle, frequently visited by researchers and hikers.
Temburong Valley — Bukit Lesong (Brunei)
Temburong Valley
A deeply incised river valley surrounded by pristine primary rainforest.
Temburong Stone Quarry — Bukit Lesong (Brunei)
Temburong Stone Quarry
One of the few mining activities in Brunei, supplying building materials for the country's infrastructure.
Bukit Pagon — Bukit Lesong (Brunei)
Bukit Pagon
The highest mountain in Brunei, located on the border with Malaysia in the Temburong district and covered by cloud forest.
Bukit Pagon Cloud Forest Zone — Bukit Lesong (Brunei)
Bukit Pagon Cloud Forest Zone
On Brunei's highest mountain, there is a unique cloud forest vegetation that is home to many endemic species.
Bukit Retak — Bukit Lesong (Brunei)
Bukit Retak
A prominent mountain ridge in the inaccessible hinterland of Brunei, known for its extreme biodiversity at higher elevations.
Bukit Tudal — Bukit Lesong (Brunei)
Bukit Tudal
A remote mountain peak in the mountainous south of Temburong.