Translation of gamma in German

Then we did a boat trip which started somewhere in the delta and ended somewhere else in the delta. Each couple received a boat and an elderly lady had to row. I did not feel comfortable with that.
We agreed to meet the next day at seven thirty to avoid the crowds at the entrance. Dinner was great. We went to a restaurant on the main street. The building was French architecture.
We had never seen a similar landscape. The lagoons had different kind of colors, blue, white, green and red. They were all surrounded by rocky, dark volcanoes making the entire landscape surreal.