A tunnel system refers to a network of underground tunnels connected together.
Sentences with «tunnel system»
There's an entire underground tunnel system so the cast and crew can «time travel» from one place to another. (inc.com)
This starter activity provides a quick, engaging introduction to a lesson, focusing on the link between sewage and the underground tunnel system. (tes.com)
Getting approval for the company's first full tunnel system in a major city may be the Boring Company's biggest hurdle, as being able to prove its ability to successfully build a tunnel network could make other cities less hesitant about the company's plans. (businessinsider.com)