Upstream Towards Hafragilfoss Waterfall, Iceland (image) University of Edinburgh Share Print E-Mail Caption A downstream view of the Joumlkulsa Fjoumlllum river in the Joumlkulsa rgljuafur canyon in Iceland. New research from the University of Edinburgh shows that the canyon was formed in a matter of days by extreme floods. Credit Mikael Attal Usage Restrictions None 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.