This is what the videographer Tom Sepe has to say about it:
tomsepe — April 24, 2010 — I shot this timelapse this week at American Steel Studios in West Oakland, CA where we are building a OVERSIZED BOTANICAL WONDERLAND out of scrap steel. Here you can see us building the roots for a Giant Flower. Come get involved! Build Big Art! We need you! Free welding classes too! goto: http://theinfinitarium.com for more info.