The Alpine Mega-Tunnel: Elevator to the Underworld - DER SPIEGEL
Gotthard Base Tunnel, Switzerland - Railway Technology
Gotthard Base Tunnel | Description, Length, Importance, Opening, & Facts | Britannica
World's Longest and Deepest Rail Tunnel, Through Swiss Alps, Opens - The New York Times
Gotthard Tunnel - Wikipedia
The Gotthard Base Tunnel Case Study | Ruckus | CommScope
Gotthard Base Tunnel (Erstfeld/Bodio, 2016) | Structurae
History in the making at St Gotthard
Gotthard base tunnel Switzerland by Niedax 2 | Inhabitat - Green Design, Innovation, Architecture, Green Building
Gotthard Tunnel – DW – 10/15/2010
Concrete contribution to Gotthard undertaking
Gotthard railway - Wikipedia
Fault induced rock bursts and micro-tremors – Experiences from the Gotthard Base Tunnel - ScienceDirect
Gotthard Base Tunnel - HOCHTIEF Engineering
Rail Technology for the Gotthard Base Tunnel - tunnel
Swiss Alps: In the Heart of the Mountain | Time
Gotthard base tunnel set to open in two years - The Local
Gotthard tunnel: World's longest and deepest rail tunnel opens in Switzerland - BBC News
Gotthard Base Tunnel: Surveying the Drive, Laser Scanning and Track Position Control - tunnel
World's longest railway tunnel, Gotthard Base Tunnel, Switzerland | AFRY
Underground giants: our six most impressive tunnel systems
Gotthard tunnel: World's longest and deepest rail tunnel opens in Switzerland - BBC News
Gotthard Base Tunnel - Longest and deepest tunnel in the world
Gotthard Base Tunel, the longest railway tunnel in the world
