Ink and colored pencil on dyed paper.
This is a flight of fancy that has been sitting in the back of my mind for some years now. I finally decided to do it. What you see here is drawn from Giovanni Schiaparelli's observations.
I chose to use pale translucent color here because the paper is so beautifully stained, I wanted it to show through, and also did not want the color to overpower the drawing.
For this map I used the actual paper I used to make [link]
Weathered Paper 16 and not the stock image.
You can view this map without the color here: [link]