Progress on the London 2012 Olympic Park became clearly visible this week as new images reveal the columns of the Olympic Stadium emerging from the ground. Over 100 columns, each five meters tall, have already been constructed and act as the support for the podium of the Stadium’s west and south stands. This also forms the lower ground floor of the west stand which houses the athletes' changing rooms, a 60 metre long call track and other back of house facilities such as doping control and treatment...