Bubble gum alley is a local tourist attraction in San Luis Obispo. A 70 foot long alley covered with bubble gums left by passers-by. Gross? Maybe… The tradition of sticking bubble gums in this alley started soon after WWII, by high school students and has continued to this day.
This wall is testimony to the fact that sometimes small, random acts performed unwittingly by a few people can take the form of bigger traditions over time.