Reverse Graffiti
This mural was created inside the Broadway Tunnel in San Francisco by British-based artist Paul Curtis using a technique called reverse graffiti or clean tagging. With the aid of San Francisco police and public works officials, Curtis spent the night blasting away at the years of grime with a high-powered water cannon.This is a nice example of otherwise dead space being transformed into something enjoyable. Tide Detergent used this effect on sidewalks recently to demonstrate their cleaning power in everyday life.
Here's a link to more photos of this mural Flickr.
1:49 PM
It's so beautiful, yet disgusting. I guess that combination is what makes it profound.
5:52 AM
Great! We have one artist in Brazil that made the same work:
http://www.alexandreorion.com/ossario/imagens.html