Safi, 30, (right) a Syrian refugee from Aleppo, walks on highway M1 near Budapest, Hungary in an attempt to reach Vienna, Austria by foot.

Safi, 30, (right) a Syrian refugee from Aleppo, walks on highway M1 near Budapest, Hungary in an attempt to reach Vienna, Austria by foot after Hungarian authorities refused to allow refugees and asylum seekers to board trains that would take them to Germany. September 4, 2015.

© Daniel Etter for Human Rights Watch.