Stawell mural photos show illusory effect | PHOTOS Anthony Piovesan@AnthonyPiovesan21 Mar 2017, 9:02 a.m. Chalk Circle artists Peter Voice and Bev Isaac created the mural. A rare effect | PHOTOS Harriett Slorach. The wall before the mural. The finished product. TweetFacebook of ╳exitWonderland muralNew photos of Stawell’s Wonderland mural at the rear of Lillies and Latte’s cafe show a rare illusory effect.Chalk Circle artists Peter Voice and Bev Isaac deliberately crafted the display to create a perfect photo for visitors to the wall.