On October 25, 2009, the biggest recorded gathering of zombies in the Southern Hemisphere occurred in Brisbane, with over 5,000 participants reportedly in attendance as reported by the Queensland Police. The walk was also a charity event helping to raise awareness and money for the Brain Foundation of Australia. On October 30, 2009, zombie walkers in Grand Rapids, Michigan attempted a second run at the zombie mob world record. An estimated 8,000 participants braved rainy weather to gather in Calder Plaza outside of Grand Rapids's City and County buildings. The event was coordinated by Rob Bliss, organizer of Grand Rapids's first zombie walk. Volunteers collected signatures from the crowd, though the record is currently unverified by Guinness. Organizers of the fifth annual Denver Zombie Crawl in Denver counted more than 7,300 zombie walkers in the event. This is considered to be a low figure, as up to one third of the total participants did not walk through the counter. The crawl took place on October 23, 2010, in downtown Denver at the 16th Street Mall. On October 24, 2010, a reported 10,000-strong zombie walk took place in Brisbane. As with previous years, the event raised money for the Brain Foundation of Australia.