تماشای ویدئو سكوی ترول بلندترین سنگینترین سازه ای كه جابجا شده است از آی-ویدئو

The Troll A platform is a condeep offshore natural gas platform in the Troll gas field off the west coast of Norway. It is the tallest and heaviest structure that has ever been moved to another position, relative to the surface of the Earth, and is among the largest and most complex engineering projects in history.