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You will notice in the albums,(silo art) that one has graffiti painted on the base. That is a cement silo in Geelong. Now Geelong is an urban port with a population of about 200,000. You will see no graffiti on any country silos and won't until they get a visit from city people. The 130 year old steel railway bridge here in Tocumwal was graffiti free until the town became attractive as a holiday location. When it did graffiti arrived.