Strait of Gibraltar
The Strait of Gibraltar has a very strategic location. Ships that travel from the Atlantic to the Mediterranean and vice versa, pass this strait. Also, very many people who travel from Europe to Africa and vice versa, travel through this strait.
The depth is 300 m.
For a number of years the Spanish and Moroccan governments have been jointly investigating the feasibility of a tunnel underneath the strait, similar to the Channel tunnel between England and France. A new three-year study for a railway tunnel has been announced in 2003.