ECOPAS (Ecosystemes Protect Sahelienne Africa), is responsible for managing the Park, to mediate between the three countries that form it and create sustainable development projects with communities living in and on the edge of the Park. If you're looking for detailed information of the Park, they have an office in Niamey. Telfs. 72 53 48/59 34 03. To the entry Park, you can buy a book edited from ECOPAS with a lots of photographies and information of the "W".