Experts say one of Mount Paekdu's previous eruptions was 'one of the largest explosive events in human history' Seismologists have warned that North Korea's repeated nuclear tests could cause its highest mountain Mount Paekdu to erupt - and they add that one of the volcano's previous eruptions was "one of the largest explosive events in human history". More than 9,000 feet high, the volcano straddles the border between North Korea and China and last erupted in 1903. Experts have warned of increasing seismic activity beneath the peak in recent years, however, including seismic uplift and rising levels of sulphur dioxide,...