On the sign the following text can be read:

"Peasant Woman and devil 

After the citizens of Aachen had deceived the devil for the soul of the first cathedral visitor, he swore revenge. He loaded a huge sack of sand on his shoulder to bury the city below.

After a long, arduous walk, an old woman met him, and he asked how far it was to Aachen.

The old woman, who had seen his horse's feet, replied clever: "Dear gentleman, look at my shoes, I got them today in Aachen and now they are torn from long walking."

Then the devil cursed and threw the sack to the ground with such force that he burst.

Thus came the legend of the Lousberg. "

The bronze statue group was created in 1985 by the Aachen artist Christa Löneke-Kemmerling.

source:

https://de.wikipedia.org/wiki/Lousberg