PicoCool

"Drivers hustling to the city’s bustling North Beach neighborhood through the Broadway Tunnel Tuesday got a pleasant surprise—etched into the grimy walls lining the roadway was a tranquil urban forest. The unique mural was created by British-based artist Paul “Moose” 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.” You can see more photos here by Flickr user, dennis. [via jamesjyu on twitter]

Network: twitter