![TIL in 2006, Katie Melua gave a concert 303 meters below sea level in one of the legs of the 'Troll A' oil-rig, earning her a spot in the Guinness book of TIL in 2006, Katie Melua gave a concert 303 meters below sea level in one of the legs of the 'Troll A' oil-rig, earning her a spot in the Guinness book of](https://i.ytimg.com/vi/_YtCHHpZNxo/mqdefault.jpg)
TIL in 2006, Katie Melua gave a concert 303 meters below sea level in one of the legs of the 'Troll A' oil-rig, earning her a spot in the Guinness book of
![A picture from inside one of Troll A's legs. Troll A is an oil and gas rig in the north sea, and is the tallest and heaviest structure ever moved by mankind. : A picture from inside one of Troll A's legs. Troll A is an oil and gas rig in the north sea, and is the tallest and heaviest structure ever moved by mankind. :](https://external-preview.redd.it/iUNeuUoJOozNTVk_WAj9sQGhjz9XLa-zx-yDLAAUXR0.jpg?auto=webp&s=73d241e3c2e0846c6dcffa2ea25f9ba26a897010)
A picture from inside one of Troll A's legs. Troll A is an oil and gas rig in the north sea, and is the tallest and heaviest structure ever moved by mankind. :
![Bjørn Levi Bang on Twitter: "@NicolasVivant @CaliaDomenico However, the original «Troll A» platform is incredibly impressive. https://t.co/7UlbD4ci60" / Twitter Bjørn Levi Bang on Twitter: "@NicolasVivant @CaliaDomenico However, the original «Troll A» platform is incredibly impressive. https://t.co/7UlbD4ci60" / Twitter](https://pbs.twimg.com/media/EVywIgVXgAAwcTR.jpg)