mystery down...
now stars

Un missionnaire du moyen âge
raconte qu'il avait trouvé
le point où le ciel et la Terre
se touchent...

An explorer of the Middle Ages
reports that he has found the point
where the sky and the Earth

Then came this image.... I can't remember when I first saw it. It had long been a favorite of astonomers.
It appears to be a medieval woodcut but was actually produced for French astronomer Camille Flammarion's book:
L‘atmosphère: météorologie populaire, Paris 1888.

A mystery... that we might find such a door... a space behind the stars
This was before C.S. Lewis' magical wardrobe.... and Kubrick's monolith: "My God, It's full of stars!"