Da Vinci describing Armenia in his work Codex Atlanticus.

Page from Codex Atlanticus by Leonardo da Vinci (folio 393 recto). Above right is a map of Armenia; in the center, map with rocky peak of Armenia; below, gravity and impact of falling of heavy body. – Biblioteca Ambrosiana, Milan, Italy

The image above is a page from da Vinci’s work known as the Codex Atlanticus, describing Armenian Highland with sketches of Armenian mountains and a map of Armenian terrain. The Codex Atlanticus is the largest collection of Leonardo da Vincis papers. Originally gathered together by the sculptor Pompeo Leoni, it is bound in twelve volumes. Its name refers to its large size, being comparable to an atlas.

source : Bridgeman – art culture history