A question you have probably never ever asked yourself is what is the depth of every single tube station on the Underground, but now the question has been asked, you are probably really curious to know the answer.
Someone else was also curious, and filed a Freedom of Information request, so the data is now in the public sphere for us to crawl over.
The figures are (apparently) in metres above sea level – but then weirdly adjusted by LU by 100 metres. I’m sure there is a exceptionally good reason for that buried in the archives somewhere.
For example, at Camden Town station the two Northbound platforms are at the same depth (111.8 metres), but the Southbound platforms differ by 90 centimetres from each other (109.3 and 108.4 metres).
Other such amazing facts were revealed in an Excel spreadsheet, which I have cleaned up a bit and you can download from here.
I suspect someone is busy updating a detailed map of the underground network as you read this.
Other exciting facts about the Underground for use in your next pub quiz can be found here.