1948 Summer Olympics torch relay then run through Switzerland and France. The route was modified only when Luxembourg and Belgium both requested that the torch travel their territories. A longer Greek route was planned, but reduced from an expected down to due to concerns over instability in the country and a lack of security. The torch lighting ceremony took place on 17 July 1948 in Olympia, Greece. As with the 1936 Summer Olympic relay, the torch relay was begun by focusing the sun's rays onto kindling using a parabolic reflector, which then lit the first torch. The kindling was conducted by a Girl Guide leader
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