Plizio Visual Lab

Vassy Forest

Plizio editorial teamUpdated: Jun 2026Data Sources

Forest

Weather…

The Vassy Forest on Anjouan Island (Ndzuani) is one of the last remaining primary montane rainforests in the Comoros. This protected area holds global significance as it serves as the primary habitat for the Livingstone's fruit bat (Pteropus livingstonii), one of the rarest and largest bat species in the world. The forest's vegetation is defined by towering endemic trees, ferns, and orchids that thrive on the island's steep, often mist-covered slopes. Geographically, the forest is situated in the higher elevations of central Anjouan, where it functions as a critical water catchment area for low-lying settlements. The dense canopy prevents soil erosion and regulates the flow of numerous streams that provide the island with its essential drinking water. Despite its protected status, the Vassy Forest faces threats from agricultural expansion and firewood collection, prompting international conservation groups to work closely with local communities on sustainable management. Research into the complex ecological interactions within this ecosystem provides vital insights for biodiversity conservation in the Western Indian Ocean. Trekking through the forest features a rare opportunity to observe the unique fauna of the Comoros in their pristine natural habitat.

Location: Comoros
Top sights: Patsy, Comoros · Gnatranga-Moiou · Barakani, Anjouan
Nearby: Tsembehou (5 km)

Best time to visit & climate

The most pleasant time to visit is Jul–Sep.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	28	28	28	28	27	26	25	25	25	26	27	28
Rain mm	222	162	150	119	58	33	27	21	19	36	50	108

📋 Practical info

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Getting there

Access to the Vassy Forest on Anjouan island is best coordinated through local villages. You will need to arrange for a guide, as the trails into the primary rainforest are not well-defined for independent travelers.

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Best season

The optimal time to visit is from May to October during the drier months. Even then, rainfall is common in the rainforest, but the lower humidity and less frequent storms make hiking more manageable and enjoyable.

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Terrain & paths

The terrain is dense primary rainforest with steep, muddy slopes and thick undergrowth. It is a challenging environment that requires good balance and physical stamina to navigate the natural, slippery jungle paths.

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What to bring

Wear long pants and long sleeves to protect against insects and scratches from vegetation. Sturdy boots with deep treads are essential for the mud, and bringing protection against leeches is also recommended.

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Parking

You can typically find a place to leave your vehicle in the village nearest to the forest entrance. Most visitors arrive via local transport and then proceed on foot with their guide into the protected area.

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Safety

It is mandatory to use a local guide to avoid getting lost in the dense jungle. Be cautious of slippery surfaces and ensure you have a basic first-aid kit, as medical assistance is far away from this remote forest.

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Time needed

A guided trek through the forest usually takes about four to six hours. This allows time to observe the unique flora and fauna of Anjouan and to navigate the challenging terrain at a safe and steady pace.

Geography

Coordinates

-12.15000, 44.45000

Facts

Supports an estimated 50% of the global population of Livingstone's fruit bats.
The forest is located at elevations ranging from 500 to 1,200 meters above sea level.
Anjouan has lost over 80% of its primary forest cover in the last 50 years.
International NGOs like Dahari are actively involved in forest conservation efforts.
The area is a critical habitat for the endemic Anjouan sparrowhawk.
Annual rainfall in these high-altitude regions can exceed 3,000 mm.