The Maginot line was constructed from 1926 till 1940. It protected the French eastern borders with Belgium, Luxembourg, Germany and Italy. The Swiss border was less strong defended. The first steps in the Maginot line for Bunkersite were made by Henk Adriaanse in 2006, 2008 and a major contribution was made in 2016.
A map with the secteurs. Author: Duomaxw (31-08-2005)