The Gabi One is one bad mamma jamma . As the longest tunnel boring machine ( TBM ) on earth , this goliath of a machine weighs in at a whopping 3,200 tons , measuring 440 meters in length and 9.58 meters in width . The Gabi One utilizes 10 single motors giving it 5,000 horsepower , not to mention , it ’ s among the most technological advanced boring machines in the world . It was used to carve out the Gotthard Base Tunnel , a 94.3 mile section of tunnels in Switzerland , making it the longest rail tunnel in the world .

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