Algars River in Arens de Lledó Nature · Arens de Lledó, Matarraña, Teruel Stretch of the Algars river, a tributary of the Matarraña, as it passes through Arens de Lledó, in the Teruel comarca of Matarraña. The Algars rises in the Puertos de Tortosa-Beceite and runs some 50 kilometres through towns such as Beceite, Arnes, Cretas, Horta de San Juan, Lledó, Calaceite, Batea, Maella and Fabara before joining the Matarraña at Nonaspe, already in Zaragoza province. Photo: jordi domènech (CC BY-SA 3.0) What to see and do in Arens de Lledó