 Between 1700 BCE and 1400 BCE, a landslide with an area of ​​13 square kilometers and a volume of 350 million cubic meters crossed the central and eastern part of the lake.The estimated energy released during this landslide event with an average fall height of 1400 meters corresponds to approximately 2.9 megatons of TNT (approximately 220 Hiroshima bombs).This resulted in a major modification of the morphological shape of the Eibsee valley.