pionier44 wrote:People stroll by and don't even notice.
Ah, but you noticed her
About that shaft cover near the Ehrentempel - there was a tunnel that ran from the Fuehrerbau to the Verwaltungsbau, along the backs of the Ehrentempel, and these shafts presumably connected with that tunnel.
About those pipes inside the Ehrentempel - I don't see any trace of such pipes in period photos that show the interiors with the sarcophagi - don't have any idea what these were for, or when they were put there.
Thanks for posting the detailed pics!