The street art by Stefaan De Croock aka Strook is an example of how art is present even in the most unexpected places like a mossy wall. The Belgian artist created this eco-friendly art work with the help of pressurized water. The result is stunning as he managed to draw a gigantic sketch onto the surface.
The mossy wall is located outside of the STUK art center in Leuven, and the illustrator improvised the drawing as he went along. The high pressure of the water allowed Strook to get rid of certain green area while leaving others untouched. The advantage of this art technique is that it can be easily removed compared to traditional paints, and it doesn't harm the environment as it lacks the toxins and chemicals of regular art materials.
The street art by Strook makes for some very green graffiti.