Giant Wave (image) The Earth Institute at Columbia University Share Print E-Mail Caption On a clear day, from these cliffs in northern Santiago island, it is possible to see a silhouette of Fogo, nearly 40 miles away. The geologists on this ridge believe that a tsunami generated by Fogo's sudden collapse generated a wave that swept the spot where they are standing. Credit Kim Martineau/Lamont-Doherty Earth Observatory Usage Restrictions Credit must be given Share Print E-Mail 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.