Translation of ditch in Spanish

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.
Why do you wanna learn to speak Portuguese, it's a very difficult language? I don't know many people who can speak well, except Portuguese and Brazilians of course. I love the sound of it.
We first took a regular bus to the border, which was basically just an empty building. There we switched to Jeeps, as the terrain was rocky. In our group there were 4 American girls and us.