Task: Make an annotated "atlas" of the large 3*3 foldout page that is reproduced in Kraus. (f85v2, f86r4, f86r6, f85v1, f86r3, f86r5)
The castles have been discussed and located extensively.
But there must be much more in the archive.
I have seen - while not even searching - interesting parallels to the "castles" ad to the "abysses". And many parallel avenues have not been explored yet - for example: the foldout is full of "decorative" repetitive elements. These might be compared with other repetitive decorations on - for example - old majolica pottery.