Located about thirty kilometers from Betioky Sud in southwestern Madagascar, the Beza Mahafaly Special Reserve unfolds along the right bank of the Onilahy River, spanning nearly 4,200 hectares. Officially established in 1986, its story began over a decade earlier, in 1975, through a unique collaboration between local communities, the University of Madagascar, and two prestigious American institutions: Washington University and Yale.
The reserve comprises two distinct forest zones. The first is an 80-hectare gallery forest lining the Sakamena River, home to tamarind trees and lush, moisture-loving vegetation. The second lies eight kilometers away and stretches over 520 hectares of xerophilous spiny forest, dominated by the iconic Didiereaceae, plants synonymous with Madagascar’s arid landscapes.
Beza Mahafaly experiences an arid climate characterized by a long dry season. Surrounding villages are mainly inhabited by the Mahafaly people, alongside the Antandroy and some Tanalana communities. Their daily lives revolve around zebu cattle herding and subsistence farming.
Despite its dry appearance, the reserve harbors exceptional biodiversity. Over 350 plant species have been documented, many valued for their medicinal or artisanal uses. The animal life is equally impressive, with the reserve renowned for its variety of lemurs including the ring-tailed lemur (Lemur catta) and Verreaux’s sifaka (Propithecus verreauxi), as well as more elusive species such as the white-footed sportive lemur and nocturnal mouse lemurs.
Terrestrial fauna also includes four species of tenrecs, reptiles such as the radiated tortoise, numerous lizards and snakes, and even Nile crocodiles during certain seasons. Bird enthusiasts will find over 100 species from 43 families here, including several endemics. Insect diversity is notable as well, with 105 species recorded across three major orders: Hymenoptera, Coleoptera, and Lepidoptera.
More than a refuge for wildlife, Beza Mahafaly is a major scientific hub. Long-term lemur monitoring has been conducted here for decades, attracting students and researchers from Madagascar and abroad, all dedicated to conservation and sustainable resource management.
Access to the reserve can be challenging, mostly via dirt tracks from Toliara or Antananarivo, but visitors are rewarded with rustic accommodations, a small scientific museum, and marked trails. This destination is perfect for expedition enthusiasts seeking an authentic experience far from conventional tourism.
Cultural heritage enriches the visit further. The Mahafaly people, famed for their elaborately carved aloalo tombs adorned with zebu horns, maintain ancient traditions that add depth and meaning to the landscape. Visitors also have the opportunity to sample local artisanal rum and explore nearby rock salt deposits.
What to Expect at Beza Mahafaly
| Feature | Details |
| Size | Approximately 4,200 hectares |
| Main Habitats | Gallery forest (80 ha) and spiny forest (520 ha) |
| Climate | Dry, with a short rainy season |
| Flora | 350 documented species, including tamarind and Didiereaceae |
| Lemurs | Ring-tailed lemur, Verreaux’s sifaka, mouse lemurs, sportive lemurs |
| Other Mammals | Tenrecs, Malagasy forest cat |
| Reptiles | 17 lizard species, 12 snakes, 2 tortoise species, Nile crocodiles |
| Birds | 102 species across 43 families, including several endemics |
| Insects | 105 species of hymenopterans, coleopterans, lepidopterans |
| Facilities | Guesthouse, camping, museum, marked trails |
| Local Culture | Mahafaly tombs, artisanal rum, rock salt deposits |
