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Roberto Calvi's Files
Brenner Base Tunnel - tunnel mesh
By Roberto Calvi in the group Tunnel walk and talkImage by BBT SE (from their Media corner)
Brenner Base Tunnel Tubes
By Roberto Calvi in the group Tunnel walk and talkImage by BBT SE (from their Media corner)Brenner Base Tunnel - Southern-Northern Europe corridor
By Roberto Calvi in the group Tunnel walk and talkImage by BBT SE - from their Media Corner.
Ceneri Base Tunnel and Gotthard Base Tunnel maps
From Wikicommons uploaded by Cooper - Geländerelief: NASA WorldWind 1.3 / Zeichnung: Cooper, Public Domain, https://commons.wikimedia.org/w/index.php?curid=3844544
cover tunnel photo by: Matt Brown from London, England / CC BY
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