Olympic symbols IOC at the 2012 Winter Youth Olympics by the city of Innsbruck, Austria, and has since then been passed on to the next organizing city of the Winter Youth Olympics. The modern tradition of moving the Olympic flame via a relay system from Greece to the Olympic venue began with the Berlin Games in 1936. Months before the Games are held, the Olympic flame is lit on a torch, with the rays of the Sun concentrated by a parabolic reflector, at the site of the Ancient Olympics in Olympia, Greece. The torch is then taken out of Greece, most often
Olympic Games ceremony the three oaths are merged into one as the Unified Oath where one athlete, judge, and coach recite one line of the oath respectively before the athlete finishes it. Finally, the Torch is brought into the stadium, passed from athlete to athlete during the torch relay, until it reaches the last carrier; often a well-known athlete from the host nation, who lights the fire in the stadium's cauldron. Under IOC rules, the lighting of the Olympic cauldron must be witnessed by those attending the opening ceremony, implying that it must be lit at the location where the ceremony is taking