Crişul Negru
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The Crişul Negru (Romanian) or Fekete-Körös (Hungarian) is a river in western Romania (Transylvania) and south-eastern Hungary (Békés county). Its source is in the western Apuseni Mountains. It flows through the towns Ştei and Beiuş in Romania. It joins the Crişul Alb river a few kilometres from Gyula to form the Körös (Criş) river.