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Login to view. I think the rainbows are rivers that connect to the sea, hence the blue and green, denoting both fresh and salt water, or highly mineralized waters inland.
![[Image: cw.jpg]](https://www.lib.umn.edu/apps/bell/map/PORTO/CHARTS/1489/cw.jpg)
Top rainbow corresponds with river Guadalquivir, bottom rainbow corresponds to Guadalete, which delineated the Christian ruled territory and the Muslim ruled area of Granada (green area above in the south Spanish coast). You are not allowed to view links.
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![[Image: 220px-Mar_Balear_delineada.jpg]](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Mar_Balear_delineada.jpg/220px-Mar_Balear_delineada.jpg)
Area of Balearic Sea matches up with this portion of the diagram to the left, above the nebuly line, which may indicate the rivers which send fresh water into the sea at that point, and note the pointy bit drawn in the MS which corresponds to Cape San Antonio in the photo above:
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![[Image: 300px-Hidrografia_almeria.png]](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Hidrografia_almeria.png/300px-Hidrografia_almeria.png)
The area of Almeria may match up with this portion, I believe the bucket indicates a bay, which is present, and the forked tube indicates rivers to me, again there are forked rivers in this area. However it may indicate other rivers further to the northeast as this area is still within the green of the portolan map, and the nymph is holding the tube high and to the right: You are not allowed to view links.
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The pointy bit drawn in the MS between these two parts of the diagram correspond to Cartagena.
The other nymphs would be located in Southern Portugal, probably Sagres Point for the far left one, or the bay just to the southeast of there as indicated by the bucket. [email=https://www.jasondavies.com/voynich/#f82v/0.463/0.805/4.00]https://www.jasondavies.com/voynich/#f82v/0.463/0.805/4.00[/email]
The main green area in the MS would represent the Gibraltar Strait & Alboran Sea. However the balance of the Atlantic Ocean, the area of Ceuta, and the Mediterranean at large are missing. I think this may be purposeful as these areas are not relevant to an indication of overland routes in Spain, and have been covered elsewhere in the MS (imho), and their absence makes the diagram not immediately recognizable at a cursory glance if for instance enemy eyes should catch a glimpse.
However the other bits match quite well, so that is my best hypothesis for the moment as to the meaning of this diagram.
You can see below how the river to the east rises near both the sources of the "rainbow" rivers.
![[Image: captura-de-pantalla-2013-11-17-a-las-23-21-34.png]](https://unrinconenlahistoria.files.wordpress.com/2015/06/captura-de-pantalla-2013-11-17-a-las-23-21-34.png)