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Olympic Flame

This image made available by LOCOG shows Queen Elizabeth II, center, and the Duke of Edinburgh, obscured, greeting Torchbearer 073 Gina Macgregor, left, and Olympic chairman Sebastian Coe right, outside Windsor Castle, Windsor, England Tuesday July 10, 2012. (AP Photo/Chris Radburn/LOCOG)

Royals greet Olympic torch

The Duke and Duchess of Cambridge and Prince Harry join the festivities,

while crowds gathered in Hyde Park for a concert, as the Olympic Flame

nears the end of it's 70-day, 8,000 mile relay.