Embalse de Alcollarín Nature · Alcollarín, Comarca de Trujillo, Cáceres Image of Alcollarín, not of the place itself. Reservoir inaugurated on 28 January 1988 (another source gives 2015 as the date it entered service, a discrepancy that remains unresolved), with 554 hectares of water surface and a capacity of 51.6 hm³. Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in Alcollarín