Dear <<First Name>> <<Last Name>>,
Did you know that among the 64.000 and some structures in Structurae tunnels represent the third largest category with nearly 7,500 entries after buildings (32,000) and bridges (21,000)? I was quite astonished myself about how much that category had grown when I recently checked. It is indeed quite difficult to document tunnels as obviously most everything happens underground. But it is still one of the most interesting fields of civil engineering though which is why I am dedicating this newsletter to these structures.
Best wishes from Berlin,
Nicolas Janberg
Chief Editor of Structurae
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