The art group Indecline created, at 800 meters long, what may be the largest illegal graffiti peice in the world.
The piece it at an abandoned military airstrip in the Mojave Desert, California, USA.
It took a crew of 8 working for six days straight, 18 hours a day. Six industrial strenght leaf blowers. 250 gallons (946 liters) of paint. Tallying a total cost in excess of $20,000. Excluding possible legal action.
See the graffitti peice being created in this behind the scenes video: