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 flame is capable of relighting the cooler more visible portion if it is extinguished. The fuel inside the torch lasts for approximately 15 minutes before the flame is exhausted. During the opening ceremony, the final bearer of the torch runs towards the cauldron, often placed at the top of a grand staircase, and then uses the torch to start the flame in the stadium. The climactic transfer of the Olympic flame from the final torch to the cauldron at the central host stadium marks the symbolic commencement of the Games. As with being the final runner of the Olympic torch relay,