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Name: Boulogne-sur-Mer topographic map, elevation, terrain.
Location: Boulogne-sur-Mer, Pas-de-Calais, Hauts-de-France, Metropolitan France, 62200, France (50.71003 1.57890 50.75052 1.63339)
Average elevation: 50 m
Minimum elevation: 0 m
Maximum elevation: 145 m