I love the notion of “image as ground” with surface, mountains and valleys. I’ve seen and used it my whole life but I NEVER really thought about how amazing and complicated it is. Posted on June 14, 2019 by Kenneth Udut Leave a comment I love the notion of “image as ground” with surface, mountains and valleys. I’ve seen and used it my whole life but I NEVER really thought about how amazing and complicated it is. [responsivevoice_button voice="US English Male"] Leave a comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. eight + 6 = Leave a Reply