Volcanic hallucinations!
From page f85v2, the nine-rosettes fold-out:
This clip covers a part of the NE rosette on the big fold-out "map" (page f85v2). It includes the volcano and the big castle with "Ghibelline" merlons. The clip is rotated 90 degrees clockwise for convenience.
As usual, there is evidence of at least three levels of tracing/retracing on this page, not counting the color painting. The original traces (Rt0) are very faint, as can be sen on the (1A) tower. The general restoration pass (Rt1) retraced a lot of the original outlines with ink that now looks like light grayish brown, as sen on the square tower (1B). some time later, another Retracer (Rt2) retouched several parts of the Rt0 and Rt1 trace, with a dark brown ink, as can be seen on the roof of the house (1C) and on the building above it.
It seems that Rt2, and possibly also Rt1, significantly altered some details of the Rt0 drawing, and added many others that were not in that version. The most significant case of the latter may be the "Ghibelline" and square merlons on the big castle. The inset drawing is my best (but still rather uncertain) guess at what the castle looked like just after the Rt0 Scribe was done with it.
The Restorer Rt1 also retraced practically all of the Rt0 text included in this clip, leaving only a few bits here and there. The Retracer Rt2 also re-retraced some of the text.
Key to annotations
Passes
(1A) Example of Rt0 (original) traces.
(1B) Example of Rt1 (restoration) retrace.
(1C) Example of Rt2 (scattered retouching) traces.
Mechanical circles
(2A) Mechanical circles, Rt0.
Big castle
(3A) Original (Rt0) traces of base of wall and.
(3B) Rt0 traces of East castle tower.
(3C) There may be an Rt0 line at the base of the merlons. The left slanted line of the first two merlons is Rt1. The rest is Rt2.
(3D) The Rt0 version of the tower's East outline edge was probably where the windows (which are Rt2) are now, and is now practically invisible. Then the roof would be properly centered on the tower. The current East outline edge was apparently retraced further to the East by Rt1/Rt2 in order to make the tower thicker, more like that of a fort.
(3E) Nonsensical retracings/creations of Rt2.
Volcano
(4A) Rt0 outline of volcano, incorrectly retraced by Rt1.
(4B) Rt0 outline of volcano, incorrectly retraced by Rt1 and Rt2.
(4C) Rt1 outline of volcano incorrectly retraced by Rt2.
(4D,4E) Rt0 rim of crater.
(4F) Possible Rt0 circles around rim of crater.
(4G,4H) Rt1 outline of crater.
(4I) Rim or crater and lava lake by Rt2.
(4J) Possible Rt0 bit of the bumps, incompletely retraced by Rt1/Rt2.
(4K) Rt0 rib of the volcano incorrectly retraced by Rt1.
(4L) The lobed lines on the volcano are all Rt1.
(4M) Some circles on the volcano are Rt2, some may be Rt1.
Cliffs outside the NE rosette, west of causeway
(5A) Rt0 lines of cliff.
(5B) Bit of Rt0 trace of cliff, incompletely retraced bt Rt1/Rt2.
(5C) Rt1 traces on cliff.
Walls inside the NE rosette
(6A) Wall edges retraced by Rt1 or Rt2.
(6B) These wall edges and the round bumps under were probably Rt0 (a few bits survive in the bumps), but mostly were retraced by Rt1.
(6C) Edges of wall are Rt0, partly retraced by Rt1.
(6D) Rt1 retraces overran the edge of the wall (presumed Rt0).
(6E) The roof of this tower seems to have been mangled by Rt1. It is not clear what the Rt0 version was. Maybe the tower was square, with a flat roof?
Cliffs inside the NE rosette, below the volcano
(7A) Original (Rt0) edge of a cliff.
(7B) Original Rt0 line, continuation of (7A), ignored by Rt1 and buried under his cliff (7D).
(7C) Continuation of line (7A), retraced by Rt1.
(7D) These hatchings may have been entirely created by Rt1.
Cliffs of causeway inside the NE rosette
(8A) Original (Rt0) traces of edges of cliff steps.
(8B) Rt0 cliff step edge incompletely retraced by Rt1.
(8C) Rt0 hatching traces partly and incompletely retraced by Rt1.
(8D) Rt0 lines, possibly top and bottom edges of a cliff.
(8E) These hatchings seem to be creations of Rt1, with no Rt0 version.
Text
(9A) These words are probably Rt1.
(9B) The text from this point on is Rt2.
(9C) Rt0 plume of
y incompletely retraced by Rt1.
(9D) In this
Sh, the ligature is Rt0, the first
e is Rt1, the seconds
e and the plume (traced in the wrong sense, clockwise) are Rt2.
(9E) The Rt0 traces of the left loop and horizontal arm of this
t were incompletely retraced bt Rt1 and Rt2. The Rt1 retrace of the right loop was incorrectly retraced by Rt2.
(9F) These parts of the label, that were restored by Rt1, were re-retraced by Rt2.
(9G) This
s was retraced (and blotted) by Rt2.
As usually, assume "I think that", "my best guess is that", etc before each claim above.
All the best, --stolfi