Quick extra detour on the way home, after a night on a train, to visit the suitably-numbered border-stone no. 50 on the Swiss/German border at Basel. Happy birthday to me! #geography #borders #borderstone #birthday

What do you do if you want to build a particle accelerator slightly above ground across the 🇨🇭🇫🇷 border and there is a border stone in the way? The solution will surprise you, as they say. Answers on a postcard, please!
Fabulous welcome this morning at CERN where patient people took time to answer our many questions.
#borders #borderstone #cern #geography

We ended up in Thônex, just after a beautiful borderstone showing the Sardaigne/Savoie arms, and the Geneva key & eagle. Home for tea! #douane #thônex #borderWalk #border #geography #borderline #borderstone