Lake Palcacocha (IMAGE) University of Washington Caption Lake Palcacocha last burst its banks in 1941, killing at least 1,800 people in the city of Huaraz. Known as one of the world's most dangerous lakes, its water level has risen in recent years with the shrinking of Palcaraju Glacier, which lies directly to the north. Credit Georg Kaser/Wikimedia Usage Restrictions With credit 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.