![Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy](https://c8.alamy.com/comp/TRJXED/lyon-turin-tav-high-speed-railway-tunnel-construction-site-saint-martin-la-porte-savoie-auvergne-rhne-alpes-region-france-TRJXED.jpg)
Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy
![Saint-Martin-de-la-Porte (Savoy, south-eastern France): works of the TurinÐLyon high-speed railway tunnel. Here, opening of several accesses to the tu Stock Photo - Alamy Saint-Martin-de-la-Porte (Savoy, south-eastern France): works of the TurinÐLyon high-speed railway tunnel. Here, opening of several accesses to the tu Stock Photo - Alamy](https://c8.alamy.com/comp/KK4MHX/saint-martin-de-la-porte-savoy-south-eastern-france-works-of-the-turinlyon-KK4MHX.jpg)
Saint-Martin-de-la-Porte (Savoy, south-eastern France): works of the TurinÐLyon high-speed railway tunnel. Here, opening of several accesses to the tu Stock Photo - Alamy
![Squeezing rock" reduces the tunnel cross section as well evidenced in... | Download Scientific Diagram Squeezing rock" reduces the tunnel cross section as well evidenced in... | Download Scientific Diagram](https://www.researchgate.net/publication/301649225/figure/fig7/AS:668312920936479@1536349625969/Squeezing-rock-reduces-the-tunnel-cross-section-as-well-evidenced-in-the-Saint-Martin.jpg)
Squeezing rock" reduces the tunnel cross section as well evidenced in... | Download Scientific Diagram
![LYON-TURIN. Telt annonce le percement de la section du tunnel de base entre Saint-Martin-la-Porte et La Praz LYON-TURIN. Telt annonce le percement de la section du tunnel de base entre Saint-Martin-la-Porte et La Praz](https://cdn-s-www.ledauphine.com/images/3920D585-4706-4C04-B6EA-A881497EF1B0/NW_raw/photo-le-dl-sylvain-muscio-1568733711.jpg)
LYON-TURIN. Telt annonce le percement de la section du tunnel de base entre Saint-Martin-la-Porte et La Praz
![Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy](https://c8.alamy.com/comp/TRJXH8/lyon-turin-tav-high-speed-railway-tunnel-construction-site-saint-martin-la-porte-savoie-auvergne-rhne-alpes-region-france-TRJXH8.jpg)
Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy
![Saint Martin Base Tunnel, 5.000 mts of excavation achieved for the Turin-Lyon High Speed Railway | Ghella Saint Martin Base Tunnel, 5.000 mts of excavation achieved for the Turin-Lyon High Speed Railway | Ghella](https://ghella.com/sites/default/files/2018-09/smlp_milestone.jpg)
Saint Martin Base Tunnel, 5.000 mts of excavation achieved for the Turin-Lyon High Speed Railway | Ghella
![Saint-Martin-La-Porte: viaggio nel cantiere francese della Torino-Lione - Strade & Autostrade Online Saint-Martin-La-Porte: viaggio nel cantiere francese della Torino-Lione - Strade & Autostrade Online](https://www.stradeeautostrade.it/wp-content/uploads/2018/02/saint-martin-la-porte-viaggio-nel-cantiere-francese-della-torino-lione.jpg)
Saint-Martin-La-Porte: viaggio nel cantiere francese della Torino-Lione - Strade & Autostrade Online
![Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy](https://c8.alamy.com/comp/TRJXH5/lyon-turin-tav-high-speed-railway-tunnel-construction-site-saint-martin-la-porte-savoie-auvergne-rhne-alpes-region-france-TRJXH5.jpg)
Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy
![Typical geological conditions at the face of the Saint Martin La Porte... | Download Scientific Diagram Typical geological conditions at the face of the Saint Martin La Porte... | Download Scientific Diagram](https://www.researchgate.net/publication/259781403/figure/fig9/AS:668431535857667@1536377905450/Typical-geological-conditions-at-the-face-of-the-Saint-Martin-La-Porte-access-adit.png)
Typical geological conditions at the face of the Saint Martin La Porte... | Download Scientific Diagram
![Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy](https://c8.alamy.com/comp/TRJXDK/lyon-turin-tav-high-speed-railway-tunnel-construction-site-saint-martin-la-porte-savoie-auvergne-rhne-alpes-region-france-TRJXDK.jpg)
Lyon-Turin (TAV) High-speed railway tunnel construction site, Saint-Martin La Porte, Savoie, Auvergne-Rhône-Alpes Region, France Stock Photo - Alamy
![Saint-Martin-de-la-Porte (Savoy, south-eastern France): works of the TurinÐLyon high-speed railway tunnel. Southern section between Saint-Martin -de-la Stock Photo - Alamy Saint-Martin-de-la-Porte (Savoy, south-eastern France): works of the TurinÐLyon high-speed railway tunnel. Southern section between Saint-Martin -de-la Stock Photo - Alamy](https://c8.alamy.com/comp/KK4MK9/saint-martin-de-la-porte-savoy-south-eastern-france-works-of-the-turinlyon-KK4MK9.jpg)