 The maar lake is within the Eifel mountain range, and is part of the East Eifel volcanic field within the larger "Vulkaneifel".This eruption was of sufficient size, VEI 6, with over 20 km3 (2.4 cu mi) tephra ejected, to have caused significant temperature change in the Northern Hemisphere.Currently available evidence suggests that the hypothesis that the Laacher See eruption triggered the Younger Dryas has considerable merit.