Donatello was one of the most innovative sculptors in the history of European sculpture. He carved this image in flattened relief (rilievo schiacciato), a technique, which he invented, in which a sculptor could create the illusion of volumetric forms set into deep, continuous space with the most subtle and shallow carving. The Madonna sits as if on the ground, to convey the idea of humility, but Donatello sets her in the clouds, so she also becomes Queen of Heaven. A feeling of weighty foreboding is expressed in the Madonna's somber profile, which seems to look into the Christ Child's tragic future.