Thanks for your advises.Florian Brouwers ha scritto: The wikipedia-article in http://it.wikipedia.org/wiki/Panzernest contains some errors. So the Stalin-line was built between 1936 and 1941 (some parts earlier), the Panzernest was first shown to Hitler in Oktober 1941 in his headquarter near Winniza/Ukraine. So the right of the two pictures could not be part of the Stalin-line. The sowjets never had them to integrate it into their line. The picture shows an Panzernest in the ukainian museum and is well known especially from his backside with steel-door and in a concret-position.
The left of the pictures is also wrong. It shows a light russian field-fortification, may be the turret of an infantry-tank from the 30ies. This also is part of the museum.
I think, that only the original one should be called "Panzernest", not all this different turrets also.
With greetings to all of you and a last question to Dr. feelgood: Where on earth you took this famous 2. picture???
Florian
As you wrote the images in the article do not belongs to the "original" Panzernest, but there were the only one that I can find in "Commons".
I also added the information about Hitler.