Organisers of the 8th Crystal Palace Overground Festival (26th-29th June) are calling for local people to get involved in what has become the biggest party of the year in Crystal Palace. Volunteers will have the opportunity to take part in the community arts festival that will run from Thursday 26th to Sunday 29th June 2014, spread across Crystal Palace, including Crystal Palace Park, Westow Park and the Upper Norwood Triangle. The events kick off on Thursday 26th June to Friday 27th June with community fringe events around the Upper Norwood Triangle area, with the big music, multi-media and vintage events held in outdoor spaces around Crystal Palace on Saturday 28th…