In pictures: Spain's Pamplona bull runPublished7 July 2014Shareclose panelShare pageCopy linkAbout sharingImage caption, The annual bull run has opened in the cobbled streets of Pamplona, Spain - a festival made famous by Ernest Hemingway in his novel The Sun Also Rises.Image caption, Serious partying: These sleeping revellers are among thousands - many of them foreigners - attending the week-long San Fermin festival.Image caption, Daredevil runners risk injury as they dash through the streets ahead of the bulls - the winding course is covered in just over two minutes.Image caption, Paramedics give first aid to a runner. At least four people were admitted to hospital on Monday, without life-threatening injuries.Image caption, A fighting calf is cornered inside the bullring. Critics say the festival is cruel because bulls are killed for entertainment during the week.Image caption, Runners charge into the bullring between the bulls - many say they are scared but exhilarated by the experience.More on this storyWhy is Pamplona bull run a thrill?Published9 July 2011