Els Castellars Pond, Espolla Nature · Espolla, Alt Empordà, Girona Image of Espolla, not of the place itself. A small pool of temporary waters about 20 metres in diameter, surrounded by cork oak woods, located among the rocky outcrops known as els castellars, within the Sant Climent Sescebes military enclosure and difficult to access. It is notable for its community of watercress beds with sweet-grass and quillwort swards, and its altitude, higher than that of other wetlands of the Albera, favours the presence of the rare fern Ophioglossum azoricum. Despite its small size, it is the only place in Catalonia where the buttercup Ranunculus nodiflorus has been found, which makes it, as a Mediterranean temporary pool, a priority habitat of interest. It is part of the Natura 2000 Network site L'Albera and is in very good conservation condition. Photo: Bertrand GRONDIN → (Talk) (CC BY-SA 3.0) What to see and do in Espolla