I was astonished to see him in Baghdad, for I had an appointment with him tonight in Samarra.

The most sensational surprise was the sudden discovery, one day, that my pictures, for the first time in history, had become walls. By means of what strange process had I arrived at such precise images? And why did they make me, their first viewer, quake with emotion?

Paintings in the Dhambalin cave . They are 5 thousand years old. It is a real mosaic of colours. They depict dancing people, a man hunting with a dog and a herd of domestic animals. This is the only site in Somalia with drawings of sheep. They are painted with decorations, which suggests ritual meaning.

At first I did not feel much inclined to agree [ Willem Maris had asked Mauve to paint together in open air, around the village Oosterbeek, c. 1863], but I did not like to refuse the little fellow flatly, so we went off together. My companion did not suffer from loquacity; and, coming to a field with cows in it, I sat down to go on with a drawing which I had begun that morning. The little chap [Willem Maris] strolled around a bit and then settled down to work himself. We sat there for hours under the pollards, until I grew curious to see what the little fellow was at. He sat sketching with a bit of chalk; but, oh! I stood astounded. I seized him by the hand and stammered in my turn, 'My boy, what an artist you are! You stagger me! It's magnificent!'

I knew a painter, a disciple of Gustave Moreau; he was truly a very fine artist, he knew his work quite well, and then … he was starving, he did not know how to make both ends meet and he used to lament. Then one day, a well-wishing friend sent a picture-dealer to his studio. The latter inspected all his works, without discovering anything of interest: the works of the painter were simply not fashionable and therefore without commercial value. But at last the dealer found a canvas with some palette-scrapings in a dusty corner and was suddenly full of enthusiasm: "Here you are! my friend, you are a genius, this is a miracle, it is this you should show! Look at this richness of tones, this variety of forms, and what an imagination.

Yet Somaliland is a country whose history is totally hidden. With wars, droughts and piracy in Somalia, hardly anyone has researched the archaeology until now. But it's absolutely full of extraordinarily well-preserved rock art.