Trummelbach falls sign. I had heard about these before the trip, but the reality turned out to be
way more interesting. The falls have found a weakness in the granite cliff wall and
managed to burrow inside the cliff over the years. Then a bunch of mostly crazy engineers
tunneled into the cliff to create a lift and a set of tunnels with viewpoints
at various interesting parts of the falls. I don't want to even guess
how they did it. This was one of the coolest things I think I've ever seen.
Very cold, very wet, and very loud.