A vast protected rainforest spanning two provinces, anchored by Mount Leuser and home to an orangutan sanctuary at Bukit Lawang.
At a glance
Gunung Leuser National Park covers 7,927 square kilometres across the Barisan mountain range in northern Sumatra. The park straddles the provincial border of Aceh and North Sumatra, with roughly one-quarter in the former and three-quarters in the latter. Its namesake, Mount Leuser, rises to 3,119 metres above the surrounding landscape.
History
Established as a national park to preserve Sumatra’s tropical rainforest ecosystems, Gunung Leuser became part of an international recognition when it joined two other Sumatran parks—Bukit Barisan Selatan and Kerinci Seblat—as a single UNESCO World Heritage Site. This tri-park designation, known as the Tropical Rainforest Heritage of Sumatra, underscores the region’s ecological importance.
What you see
The park protects a wide range of ecosystems spanning lowland rainforests to montane cloud forests. Mount Leuser itself dominates the landscape, accessible to trekkers and naturalists. The celebrated orangutan sanctuary at Bukit Lawang provides visitors with opportunities to observe these endangered primates in their natural habitat.
Cultural significance
Gunung Leuser is among Indonesia’s most biodiverse protected areas, serving as a crucial refuge for endemic and endangered species. The park’s orangutan sanctuary has become iconic in global conservation efforts, drawing international attention to Sumatra’s wildlife and the threats facing tropical rainforests.
Key facts
- Location: Northern Sumatra, Indonesia (Aceh and North Sumatra provinces)
- Area: 7,927 km²
- Mount Leuser elevation: 3,119 metres
- Coordinates: 3.5°N, 97.5°E
- UNESCO World Heritage Site: Tropical Rainforest Heritage of Sumatra (with Bukit Barisan Selatan and Kerinci Seblat National Parks)
- Notable feature: Orangutan sanctuary at Bukit Lawang
Practical information & getting there
The park is accessible via several entry points. Bukit Lawang, in North Sumatra, is the most visited gateway for orangutan sanctuary visits and trekking. You can reach the park from Medan, the nearest major city. Permits and local guides are recommended for most activities within the park.
Sources & resources
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