Sewage Treatment Plant of Monfragüe (IMAGE) Spanish Foundation for Science and Technology Caption This is a sewage treatment plant of Monfragüe (Cáceres, Spain). Credit Naturaleza Fragüe. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.