Da Vinci’s Virgin of the Rocks

c. 1485.   Oil on wood panel (now transferred to canvas), 6’6″x4′.   Musee du Louvre, Paris.

 

 

 

encyclopedia britannica

Leonardo da Vinci – Biography

 

cnn article

Sketches hidden underneath Leonardo’s ‘Virgin of the Rocks’ revealed after 500 years

 

khan academy article

Virgin of the Rocks