Translation of bottleneck in German

We were a little worried about the entry to Vietnam because regulations specifically mentioned to leave two blank pages in the passport for the Visa stamp and my wife's passport was full.
Our fisherman stopped the boat and his nine year old girl opened a box with souvenirs, clothes and hats. We were in the middle of a river not going anywhere and had to start buying things.
In Colorado there are amazing mountains, belonging to the Rocky Mountains and in New Mexico you have the really gorgeous desert areas. Some other states there have also large desert areas.