Wikipedia
Ibón
Ibón is the Aragonese term for small mountain lakes of glacial origin in the Pyrenees, generally above 2,000 m. Many of them are the source of watercourses in Aragon.
There are in total 94 ibóns of different shapes and sizes; some of them are used to feed small hydroelectric plants.
The ibóns of Anayet, Sabocos, Ip or Estanés are the most well-known.