In Alameda CA, 6,000 people including 3,800 elementary school kids came together for two weeks in mid-June to draw a huge 90,000 sq. ft. salamander. The artist responsible, Mark Wagner, Creative Director of the Kids Chalk Art Mission, provides a salamander-ladened story on his blog. The footnote of the salamander story blog entry states that he told the story to the elementary students of Alameda CA and I imagine this is the inspiration for the event. And, according to Mark Wagner's blog (which I couldn't confirm) the drawing set a world record!