Digital Terrain Model in 3D (IMAGE) Spanish Foundation for Science and Technology Caption This is a digital terrain model in 3D view displaying the Catalan rivers under investigation. Credit Camino Liquete et al. 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.