![](https://scienceblogs.de/klausis-krypto-kolumne/files/2021/02/Cipherbrain-Visual.png)
Blog reader Declan Gilligan from Dublin has provided me a long list of facts about Irish crypto history. I used some of these to extend my Cryptologic Travel Guide.
Blog reader Magnus Ekhall has taken a trip to the Rök runestone, a famous cryptologic sight in Sweden. Here are his report and a few photographs he took.
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