Diesel shunter Tm # 506 of the Dampfbahn Furka Bergstrecke (DFB) on 2160 meter a.s.l in Furka DFB station. The vehicle, which has no cogwheel drive, was brought up by HG 4/4 # 704. The Tm # 506 will pull three of the freight cars from Furka DFB through the Furka summit tunnel to Muttbach-Belvédère in the Valais.