From REI website:
The Beardsley Boulder Pile, a long-frequented and beloved climbing and recreation area located in North Phoenix, is in dire need of your help! Join REI, the City of Phoenix, and local climbing gyms to be a quintessential part of our second-annual cleanup project of the area, Trim Beardsley. In addition to giving this area the grooming it so desperately needs, volunteers will have the awesome opportunity to experience the excellent climbing Beardsley offers, but without all of the broken glass and trash that it's so tragically become notorious for, and with a brand-new set of climbing buddies. Cleanup efforts will begin at 9AM sharp & continue until 12PM with the climbing session taking place afterwards. Coffee, breakfast, cold refreshments & all of the necessary cleaning tools/supplies will be provided for volunteers and participants. A raffle will be held following the cleanup, with multiple prizes geared towards both climbers and outdoor enthusiasts alike.