Guess where I went!
Sadly with a migraine but enjoyed it immensely nonetheless.
#SecretLondonpic.twitter.com/qJzKsocTUm
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Gorgeous abandoned underground tunnels.pic.twitter.com/hyaWlQYx0F
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Gorgeous! And the poster left from when these pedestrian tunnels closed in the 1960s. This is in Euston Station.pic.twitter.com/0wfUstNPG2
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Also a lift shaft that is now a ventilation shaft!pic.twitter.com/1r4y3ISoXL
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You too can do this.
Book tickets to go into these and similar places! https://www.ltmuseum.co.uk/whats-on/hidden-london …2 replies 0 retweets 2 likesShow this thread -
The booking office shown in a photo above (spot the in and out tiles) is the one in this map in pink and it is on the unused footpath I walked down. These train lines (C&SLR and CCE&HR) in black are now known as the two branches of the Northern line.pic.twitter.com/MmQRR015xH
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And the answer to the top tweet is: behind/inside the ventilation shaft on the Victoria line platforms at Euston station. 
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