This corridor is almost completely around one of the last level gave me the solution to the legend that surrounds the courthouse in Brussels. Indeed, the legend says there are so many rooms that nobody really knows the number. It would suffice to count them you say? Certainly, but the legend also says that some rooms are hidden! And it's true! This corridor will lead to narrowing to a dead end. But shortly before, once a straight line (since it is the turn of the last square base, so that makes 4 times) there is a steep staircase, added a bit anyway, which is sometimes blocked the passage a pipeline. This staircase leads into empty rooms mysteriously seem to have been recently refurbished (light, electrical outlets). Impossible to know what they were good or what they will be used, it is already difficult to access with empty hands, imagine the trouble we have to make a table! No other access to these rooms, no windows.

A corridor of access to different areas of the underground quarry of Eragny.

In the highest corridors of the underground quarry Mello. Almost 20m ceiling.

One of the longest corridor in the NATO bunker, toward the exit.

This graffiti is the last in the series about death in this corridor.

The highest area of the quarry. Many arches and corridors.

Corridor in the underground quarry of Eragny.

Quarry of Triel sur Seine