Translation of clot in German

You're from USA right?! You are learning German too? Why? Do you want to go to Germany? I'm from Italy and I used to live in Portugal for a while. Now I'm learning in order not to forget everything I learned there. Are you working?
Anyway, back on the boat station we tipped the father and left. The bus was already waiting although we were the first ones to arrive. We had to wait nearly one hour until everybody was back.
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.