A replica of the world's oldest surviving steam locomotive named "Puffing Billy" was spotted in northern England at the Beamish Museum in County Durham.<br /><br />Filmed before the coronavirus lockdown on March 20, the Puffing Billy replica of the steam engine is seen making its way along some tracks. <br /><br />The filmer explained: "This was taken in 2020 at [the] Beamish museum in the UK before the lockdown.<br /><br />"It shows a replica of the original coal mine steam engine Puffing Billy on which you can learn how to drive the style old steam engines like this and the 'Steam Elephant.'"<br /><br />Puffing Billy was used in the 19th century to haul coal from mines in the north of England.