2 separate sets of stairs. Northern set goes up east to west, only to exit doors. Railing blocks crossing between them where they pass on the middle. Pathway from south to north under the upper level landing, parallel to the hallway.

Attached photo(s):
https://westnordost.de/p/112797.jpg
https://westnordost.de/p/112798.jpg
https://westnordost.de/p/112799.jpg
https://westnordost.de/p/112800.jpg