And the Thames tunnel, for which just the planning is likely to cost more than the complete construction of the world's longest, deepest undersea tunnel, which

And the Thames tunnel, for which just the planning is likely to cost more than the complete construction of the world's longest, deepest undersea tunnel, which you may assume is being built in China? Not China. It's actually in Norway. Denmark is also building a giant tunnel, and Austria, Switzerland and Italy are active in the Alps.