Valdecañas reservoir
The Valdecañas reservoir ("embalse de Valdecañas, in Spanish)" is a reservoir on the Tagus River. It begins in the municipality of El Gordo and ends at the Valdecañas dam, in Belvís de Monroy, in the Province of Cáceres, Spain. Its basin has an area of 36,540 km2 with an average annual water inflow of 4,054 hm³. History. The reservoir project's construction was started 1957 and completed in 1964. Beneath its waters is a Bronze Age site with a dolmen that emerges when the waters drop. The Guadalperal dolmen megalithic complex is also called the "Spanish Stonehenge" for  its resemblance to the Stonehenge cromlech, a megalithic monument located near Amesbury, in the county of Wiltshire, England. Land Use. In 2014, the demolition of a tourist complex known as "Isla de Valdecañas" was ordered by "El Tribunal Supremo", the Supreme Court of Spain. This complex was built within the reservoir, in the area belonging to Natura 2000.