This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Mengs Mars. en Graphic study of Mars by Anton Raphael Mengs Black and red chalk white heightening cm Carton for ceiling fresco in the northern wing former Teatro domestico of the Palacio Real Aranjuez Now Wrzburg MartinvonWagnerMuseum der Universitt Steffi Roettgen Anton Raphael Mengs vol Das malerische und zeichnerische Werk