The best way to get to Romania from Belgrade is to take a bus to Vrsac on the Serbian side of the border and then a train to Timisoara in Romania. Since I had to stop in Vrsac anyway, I decided to take advantage of my new tent and do some camping there before crossing the border. The small, extremely green mountain range just outside the city is perfect for a day or two of trekking, well-marked and easily accessible. Camping is allowed in most of the area.