Jeju Island is relatively young, in geologic terms, only about two milliion years old. This volcanic island, located off the Korean Peninsula, holds a UNESCO

Jeju Island is relatively young, in geologic terms, only about two milliion years old. This volcanic island, located off the Korean Peninsula, holds a UNESCO
Y1K really came in with a bang for those living around the Sea of Japan, thanks to a VEI 7 eruption at a volcano sitting on the border between modern-day China and North Korea.