How Tunnels Are Made

In this video I talk about how tunnels are made. In particular, I talk about tunnel boring machines (TBMs). I explain how tunnel boring machines work, why tunnel boring machines are better than other methods of tunnel construction, and the history of tunnel boring machines. ——— Thumbnail image attribution: Ingbife, CC BY 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons, https://commons.wikimedia.org/wiki/Fi...