Waterfall Animation Video (VIDEO) DOE/Oak Ridge National Laboratory This video is under embargo. Please login to access this video. Caption The San Rafael Waterfall in Ecuador collapsed in Feb. 2020 after a sinkhole in the Coca River opened. Following the waterfall collapse, the lava dam it flowed over also collapsed due to erosion. What followed is a geographic event of massive proportions. Credit Jacquelyn DeMink, Oak Ridge National Laboratory, US Department of Energy Usage Restrictions n/a License Original 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.