T' Yorkshire Pipe
Undersea pipes are needed to connect the oil gas platforms to the land, but they can also carry gas a very long distance, even between different countries.
The Langeled pipeline brings gas all the way from a place called Nyhamna in Norway to the Easington gas terminal on the Yorkshire coast of England. The pipeline is 1,166 kilometres long - over 700 miles!
How good is your geography? Can you find Norway and Yorkshire (in the UK)?
Phew! That's a long way - I wonder how you keep a long pipe clean...