Map of Cotonou and sourroundings. SVG-Version. Projection: WGS 84 / Pseudo Mercator, EPSG: 3857.
Own work + Openstreetmap, SRTM, ETOPO1, Wikipedia articles, Wikivoyage articles, US Army Map 1:1000000, Russian Military Map 1:500000 for some spot heights, http://www.dailytrust.com.ng/news/feature/corruption-thrives-at-nigeria-s-borders/127163.html
Metropolcarte