A train of the Jungfraubahn railways drives down to the Kleine Scheidegg station (altitude 2061 metres/6762 feet) near the Swiss mountain resort of Grindelwald July 25, 2012.The Jungfraubahn cog railway line, considered pioneering for the steep incline of its 7 km tunnel dug behind the Eiger mountain's North Face, is celebrating its hundredth anniversary on August 1. Picture taken July 25, 2012. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: TRANSPORT TRAVEL)