"Esla"@en . "275000.0"^^ . "The Esla is a river in the provinces of Le\u00F3n and Zamora in the northwest of Spain. It is a tributary of the Duero River that starts in the Cantabrian Mountains and is 275 kilometres (171 mi) long. Its direction of flow is from north to south."@en . "1500.0"^^ . . "1.6081e+10"^^ . . . .