Translation of insurmountable in German

We started the next day with the famous breakfast at our famous Rex hotel. The breakfast was not good at all and they tried to mimic an American continental breakfast, instead of using typical food.
When we arrived at the port, or whatever it was, we were a little scared since the boats were very old and dirty. We entered the boats anyway and hoped for best. The boat driver started the engine.
My wife and I left the hotel to walk around this tiny village. We just fell for this place. In the afternoon we made a hike to a nearby hill. From the view point one could see the entire Atacama desert.