Until the 2010 Winter Paralympics, the host country chose the site and the method through which the Paralympic Torch was lit. Since the 2012 Summer Paralympics, the concept of the Paralympic Torch Relay has changed and the Official Paralympic Flame is always created in the Games host city by uniting different regional flames. For London 2012 four regional flames from the national capitals of London, Belfast, Edinburgh and Cardiff were brought together in Stoke Mandeville, the birthplace of the Paralympic movement, on 29 August 2012 to create the London 2012 Paralympic Flame. In the future not only flames from regions of the host country will be united, but also other international flames. As such Stoke Mandeville will feature in all future Paralympic Torch Relays with the lighting of the Heritage Flame which will then travel to the host city to join all other flames. During the final 1–2 days the torch follows a linear relay route and, on the day of the Opening Ceremony, the flame reaches the main stadium and is used to light a cauldron situated in a prominent part of the venue to signify the beginning of the Games. Then it is left to burn throughout the Games till the Closing Ceremony, when it is extinguished to signify the end of the Games.