 This was most famously depicted in his published cross-section of Chimborazo, approximately two feet by three feet (54 cm x 84 cm) color pictorial, he called "Ein Naturgemälde der Anden" and what is also called the Chimborazo Map.It was a fold-out at the back of the publication.Humboldt first sketched the map when he was in South America, which included written descriptions on either side of the cross-section of Chimborazo.