https://phys.org/news/2018-06-deadliest-volcanic-eruptions-years.html

The sudden eruption of Mount Ontake kills more than 60 people in Japan's worst volcanic disaster in nearly 90 years. The 3,067 metre (10,121 feet) Ontake is packed with hikers when it erupts without warning in September.

Also in Japan, the Unzen volcano kills 43 people when it erupts in 1991.