The Site consists of a lake of around ten hectares, with an islet, flood zones and wooded edge, within the capital city Antananarivo. The lake is surrounded by eucalyptus and camphor trees, as well as Juncus and Cyperus reeds. It plays an extremely important role in providing a refuge and nesting site amid the urban environment to waterbirds such as herons and ducks. Particularly during the hunting season, the Site is key to the survival of 14 threatened waterbird species and subspecies endemic to Madagascar. It is the only known site on the Malagasy highlands to host the endangered Madagascar pond heron (Ardeola idae), and it is also home to the endangered Meller’s duck (Anas melleri) and the vulnerable Madagascar grebe (Tachybaptus pelzelnii). The Site also hosts historical relics. The lake is privately owned, and a management plan is not yet available to address the eutrophication and erosion problems that are reducing the lake’s surface area and degrading its water quality. Regular bird-counting and birdwatching trips take place at the Site.