Translation of duodenal in Spanish

This site was one of the country's most famous places as Tomb Rider with Angelina Jolie was filmed there. It was built like a pyramid with many stairs and little towers. The place was called Angkor Thom.
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.
It was a two hour flight above the vast area of Patagonia. On the left side of the flight path there were mostly arid areas, some covered in snow. On the right side of the airplane were the mountains.