The Toutle River in Mount St. Helen’s Monument, April 22, 2005, 25 years after the eruption. An aerial view of Mount St. Helens erupting, May 18, 1980. Nicholas George/The Chronicle/AP Photo.

South-central Indonesia is under high alert after a volcanic eruption Tuesday afternoon. The Mount Lewotobi Laki Laki volcano on the island of Flores showed significant activity throughout the day ...