6 page fold out and earths "internal fires"

[MarcoP]

In any case, as you note in your OP, there have been suggestions before that there is a volcano depicted in the 9 rosette foldout page. I remember that after reading Ellie Velinska's post, I had tried to find medieval depictions of volcanoes, and came up empty handed.  
This was really surprising to me: I would have thought that such a spectacular phenomenon as volcanic eruptions would have been something worth depicting, especially considering the well known etna, stromboli, etc... but I was never able to find a single medieval image of them.
If we are going to consider the possibility of a volcano in the Voynich, it would be very helpful to have a contemporary (15thC) image of one to compare it to. Does anyone know of any?

Edinburgh University Ms. 176 is a copy of the De Balneis Puteolanis. Kauffmann, "The Baths of Pozzuoli" dates the manuscript to the middle of the XV Century. The University site dates it to 1413.

At f3v, the manuscript includes an You are not allowed to view links. Register or Login to view. that is very different from all the others I have seen. It appears to be a view from a beach near Pozzuoli, looking South, with Naples on the left and the Vesuvius volcano in the background. It is an amazing anticipation of a landscape that has been painted thousands of times through the centuries (I attach a late example for comparison). I have no idea if this illustration is a creation of the illustrator of this manuscript or if it derives from some other tradition: I am rather sure that nothing similar can be found in earlier copies of the De Balneis.