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Blanka, Mrazovka, and Strahov Tunnel - the three Prague City Ring Road tunnels that were fully closed to traffic due to issues with the security and monitoring systems Tuesday night.

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Jan 30, 2018 · Answer 1 of 15: I need to know is there any long road tunnel between Prague and Humpolec? If yes, how long is it approximately. Tnx for your help.

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