Piece of cake. They haven't got submersibles. Yet...
How many Teutonic plate zones would that tunnel pass?
I would never ride inside such a tunnel.
Not sure what an ornate german dish would have to do with it ;) But those tectonic plates would seem to be a formidable engineering obstacle. The route would seem to be riding the northern edge of the pacific “ring of fire” -not the optimal place to put a 125+ mile underwater tunnel.
I would never ride inside such a tunnel.
Yet Los Angeles has a subway system in daily use by thousands of commuters.
Germany would probably build some of the equipment used to build the thing, but not the plates. :^)
Yeah you definitely want to stay away from Teutonic plates, you might end up with a fork in your hand if you try to take the weiner schnitzel.