Hosted by Wasatch Roller Derby, the picnic commenced at their home, the Derby Depot, on Saturday July 30. Wasatch has been hosting these picnic scrimmages twice a year since 2009. Mountain Mayhem Black and White Picnic Scrimmage @ Derby Depot 07.30 By Paige Snow August 3, 2011 SHARE THIS: Facebook Twitter Roller Derby Your donations allow us to share underrepresented stories for FREE! Donate $10 Choose Amount