Map showing El-Mreiti, a waterwell located near the town Crampel in Mauritania, and state, colonial, boundaries, with roads and ways for motor traffic, heavy duty roads, light duty roads, other tracks or paths, permanent water points with depth in metres, temporary water points, salt water marshes, swamps, marsh, wells, dunes, sand, basins with sandy bases, island or board mountains, level, steep edges, reinforced towers, cemetries, graves, ruins, astronomical points, relative heights: steep slopes and dunes, altitude with height in metres, flight and landing strips, palms, trees, baobabs, pastures, post offices and post offices with telegraph or telephones, telegraph lines, radio or broadcast stations, customs offices. Relief shown by form lines, hachures and shading, height in metres. Special edition IV. Scale 1 : 500 000.
