UNIQUE: Hand-signed 'Eigen Druk' in the lower margin Catalogue raisonné: Bool #378 © The M.C. Escher Company B.V. In "Puddle", Escher has made the use of reflection explicit! The water which forms the puddle in the middle of the muddy, rutted road reflects the images of trees and sky. The artist has thus united three separate spatial realities - the trees, the moon, the muddy ground into one flat plane... Escher describes this work as follows: "The cloudless evening sky is reflected in a puddle which a recent shower has left in a woodland path. The tracks of two motor cars, two bicycles and two pedestrians are impressed in the foggy ground."