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
2010 Summer Youth Olympics torch relay the end of each day, the flame would be returned to the safety lantern. The safety lantern was also used to keep backup flames lit, allowing the main torch to be re-lit should it go out. At least three safety lanterns were kept lit throughout the duration of the relay. The cauldron, not to be confused with the Olympic cauldron lit during the opening ceremony, was lit at each community celebration site. These were found at the last location of activities during the relay at the 5 cities visited, as well as at the end of each day during the