Translation of metallurgy in German

We returned to the former capital of the South at dawn and were dropped next to our place. We had a very nice day all in all, although it was very touristy. We felt that we have seen enough of the area.
The bus driver drove so quickly and with extremely dangerous maneuvers. We were so afraid and the other passengers started to scream at the driver which did not help the situation at all.
The border control was in the middle of the Andes mountains, at an elevation of around 2000 meters above sea level. The forest around us was covered with snow and the scenery was breathtaking.