Tunnels with single lining: Recently Modified

• Structures
• Tunnels, Caverns and Shafts
• Tunnels
• Lined tunnels
• Tunnels with single lining

Recently Modified

Saint Nicolas Tunnel

Canada (1960), modified on 28/05/2021

Rehberg Tunnel

Germany (2013), modified on 28/05/2021

Tunnel Masserberg

- Germany (2013), modified on 28/05/2021

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