Refugees rest at a supply camp set up by volunteers and aid workers soon after crossing the Hungarian-Serbian border. Hungary, along with Italy and Greece, has seen a huge influx of refugees and migrants in 2015. Most of them cross the border into Hungary from neighbouring Serbia and usually intend to travel onwards to Austria, Germany or other northern European countries where they hope to claim asylum and find employment. Due to the large numbers of people entering the country illegally, Hungary has built a 175 km long, 4 metre high fence along its southern border with Serbia to try and keep them out. It has also announced that from Tuesday 15 September 2015 anyone crossing into Hungary illegally will be arrested and put in prison rather than being taken to a refugee camp.