Map showing Darfur, a region in western Sudan, and international, intercolonial, provincial, district boundaries, with place names, railways, with gauge in metres written along the line, under construction, projected, roads suitable for motor traffic, suitable for carts, tracks, telegraphs or telephones, telegraphs or telephones along roads or tracks, : provinces, frontier districts, localities, mountain ranges, peaks, valleys, capes, islands, tribes, towns of 1st, 2nd, 3rd, 4th and 5th importance, rivers, unsurveyed, canals, marshes and swamps, plains liable to inundation, contours are at 200 & 500 metres & thence at 500 metre intervals, geodetic trigonometrical stations, altitudes in metres, depths in metres, wells, springs, waterholes, pools, historical ruins, wireless telegraph stations, Mamuriya (administrative district headquarters), scale of nautical miles, heights in metres, land aerodromes, landing grounds, airship base, airship hangars, airship mooring masts, water aerodromes, seaplane mooring areas or anchorages, marine lights: lighthouses or light buoys, light vessels (centre of star), aeronautical air lights, aeronautical radio D/F or radio beacon stations, overhead height tension cables, landmarks, obstructions over 60 metres (200 ft) above ground, danger areas, explosives areas, airports (with customs facilities) land and water aerodromes with air light. aeronautical radio communication stations and D/F or radio beacon stations with notes, lines of equal magnetic variations, landing grounds abandoned. Relief shown by form lines with height in metres and tinted shading. Colour. Scale 1: 2.000.000.