Plizio Visual Lab
Glacis-Trois Frères Habitat
The Glacis-Trois Frères Habitat is situated on the slopes of the mountain massif above Victoria on the island of Mahé. This area is famous for its spectacular granite formations, known as 'glacis,' and its unique flora. Rare endemic plants, such as the Seychelles Pitcher Plant (Nepenthes pervillei), grow in the rocky crevices and on the barren soils. The vegetation has adapted to the extreme conditions of high solar radiation and rapid water runoff. From the mountain peaks, visitors can enjoy expansive views over the east coast of the island and the Sainte Anne Marine Park. The area is accessible via hiking trails, which require steady footing due to some steep sections. Ecologically, the habitat is of great significance for the conservation of insect species and small reptiles that occur only at these higher altitudes. Management efforts aim to prevent the spread of invasive plant species that could displace the native flora and disrupt the ecosystem.
- Location: Seychelles
- Top sights: Trail junction · Trois Freres viewpoint · Turtles farm
- Nearby: Bel Ombre (4 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 27 | 28 | 28 | 29 | 28 | 27 | 26 | 26 | 27 | 27 | 27 | 27 |
| Rain mm | 207 | 109 | 106 | 115 | 94 | 80 | 55 | 62 | 108 | 117 | 124 | 164 |
📋 Practical info
Geography
Facts
- Famous for the endemic pitcher plant Nepenthes pervillei
- Located at an altitude of approximately 300 to 400 meters
- Glacis are massive, smooth granite rock formations
- Provides panoramic views of Victoria and the Indian Ocean
- Home to rare endemic lizards and frog species
- Important site for botanical research on the island of Mahé
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Sights in the town Glacis-Trois Frères Habitat (10)
Trailhead to Morne Seychellois
Start of the hiking trail to the Morne Seychellois summit.
Dans Gallas
Lookout point in the Glacis-Trois Frères area, view of the coast.
Morne Seychellois
Mountain on Mahé, highest point of the Seychelles.
Summit of Morne Seychellois
Summit of Morne Seychellois, panoramic view of the island.
Unity Monument
Monument in Victoria, symbolizing the unity of the Seychelles.
Library fountain
Fountain in front of the National Library in Victoria.
Sights nearby
Frequently asked questions
Why is the Glacis-Trois Frères ecosystem so important?
How difficult is the hike there?
Is a guide needed for the path?
What is the weather like up there?
Is a picnic allowed?
Glacis-Trois Frères Habitat: where is it located?
Glacis-Trois Frères Habitat: what is there to see?
Glacis-Trois Frères Habitat: when is the best time to visit?
Glacis-Trois Frères Habitat: why is it worth visiting?


























