Festa di San Firmino

Revelers celebrate the ‘Chupinazo’, the official opening of the San Fermin fiestas in in Pamplona, Spain, Wednesday July 6, 2011 to celebrate the start of Spain’s most famous bull-running festival with the annual launch of the "chupinazo" rocket. Perhaps best glorified by Ernest Hemingway’s 1926 novel "The Sun Also Rises," the San Fermin festival is known around the world for the daily running of the bulls. (AP Photo/Alvaro Barrientos)