Plumes of steam and shrieks of steam whistles will fill the air as a variety of steam-powered equipment is fired up at the Roots of Motive Power Festival. Aiming to showcase every piece of operable equipment under power, the event also features a Model A tour group, gourmet barbecue, and raffle. The smell of whole pigs roasting on the spit draws a huge crowd as the event ends each day. The steam-up is free and open to the public, however there is a charge for barbecue. Saturday–Sunday, September 7–8, 10 a.m.–4 p.m. Roots facility, 390 E. Commercial St., Willits. For more details, visit rootsofmotivepower.com.