A Miracle Machine From Switzerland: It Drills Through a Mountain in a Week!
Besides its reliable financial system and delicious chocolate, Switzerland is also famous for its well-developed transportation system, which runs like clockwork. The Alpine region occupies two-thirds of Switzerland's territory, and to date, around 1,300 tunnels have been built in the Swiss mountains for various purposes, including the world's longest railway tunnel: the Gotthard Base Tunnel.
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