A gorgeous gravure that I have always liked, here in a pristine version which Mocambo has just posted at Todon.nl.
I did a search for the artist's name (believing it to be Nicholas Flamel) but it turns out its first publication is way more recent than I expected, and author is unknown.
"The Flammarion engraving is a wood engraving by an unknown artist, so named because its first documented appearance is in Camille Flammarion's 1888 book L'atmosphère : météorologie populaire ("The Atmosphere: Popular Meteorology").[1]
The wood engraving has often, but erroneously, been referred to as a woodcut. It has been used as a metaphorical illustration of either the scientific or the mystical quests for knowledge. "