Here some more info from the official side:

The Roxy Chicken Jam once again takes over with a non-stop line-up. March 24-27, 2011 events include all-female Halfpipe and Slopestyle contests, mens big air comp, athlete signings and a free concert in the Village featuring LA ROUX & TROUBLE ANDREW. The Mascot Contest is sure to make you laugh harder than ever at a Halfpipe! Since 2004 the RCJ has been the original and most prestigious stand-alone womens snowboarding competition.

The event attracts thousands of spectators and the best female riders in the world to one of the best parks and one of the only 22-foot Super Pipes in North America. New! Were spreading our love for Mammoths new AcroBags at the Stomping Grounds Evolution Park! Snowboarders in training can throw jumps into a cushy air-filled landing pad. Watch the pros or try it for yourself at a special event discounted rate, courtesy of Roxy and Mammoth Mountain during the Roxy Chicken Jam. * A portion of the proceeds will go to the Quiksilver Foundation.