advisor , vacation , West Africa Senegal Railways - The Dakar–Niger Railway Senegal  has 906 km of railway at  1,000 mm (3 ft  3  3 ⁄ 8  in)   gauge . This is part of the  Dakar-Niger Railway  which crosses the border to  Mali .  Senegal Rail Station Clock Tower The Dakar–Niger Railway connects Dakar, (Senegal) to Koulikoro,