"Les Olles" lagoon, with 54 Ha, is the smallest lagoon in the Natural Park of the Ebro Delta. It is situated in the district of L'Ampolla, in a very priviliged place wich confers it a great diversity of environments: bay, rice fields, lagoon and beach.
It has its origin in old throats of the Ebro river, wich in the course of time have lost its funtion. It is a little deep lagoon that hardly overcomes 1,5 meters.