If you thought this page would be about the Boring Company, you are mistaken. Instead, it is about a tunneling project in Europe, which had to deal with several natural challenges. Aside from having to drill up at an angle of almost fortytwo degrees, they had to deal with non-solid and aquiferous rock layers, and other technical difficulties.
And maybe you think all this boring, but the choice in that case is simple: just browse to some other site, that is more to your liking. I won't be sad, because we all write not to convince others, but to help those who might think like us not to feel alone...