There’s a lot happening below ground in Switzerland, too! 🤩 Did you know that the Gotthard Base Tunnel, at 57 kilom… https://t.co/Q8pcK8wSlM

There’s a lot happening below ground in Switzerland, too! 🤩 Did you know that the Gotthard Base Tunnel, at 57 kilom… https://t.co/Q8pcK8wSlM
Source: スイス観光

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