The paper also aims to reflect the low environmental and territorial impact that this freight rail corridor represents, respecting
natural parks and protected areas, showing in turn the viability of the route for low-slope areas. The rail corridor begins in
Algeciras (Spain) and Sines (Portugal) and ends in Paris; for stretches of the route whose current state is not fully defined (under
construction, projected future, studying alternatives, etc.), the most reasonable current scenario has been used.