Porma Canal and the contrast of Los Oteros Nature · Corbillos de los Oteros, Esla-Campos, León Image of Corbillos de los Oteros, not of the place itself. The canal, opened at the beginning of the 1980s, runs past the municipality's four villages and has split the landscape in two: yellow dry farmland to the east and an intense green of irrigated land to the west, a contrast plain to see at the height of summer. Photo: Adolfobrigido (CC BY-SA 4.0) What to see and do in Corbillos de los Oteros