The Albula Tunnel is the centrepiece of the Albula Railway which forms part of the Rhaetian Railway network in the Canton of Graubünden Switzerland. With its maximum elevation of 1820 m (5970 ft) above sea level it is after the Furka Tunnel the second highest alpine tunnel in Switzerland and has a mountain overlay of up to 950 m (3120 ft).The northern portal of the tunnel is at Preda in Bergün and the southern portal at Spinas in the Bever valley.
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