Определите основную идею текста
A century of volcanic inactivity had made Washingtonians complacent.
Mt. St. Helens exploded with the force of 10 million tons of TNT at 8:30a.m., throwing nature into upheaval.
Mt. St. Helens was one of the most beautiful mountains in the Northwest, having been called the Fujiyama of America.
There still exist active volcanoes that can turn the areas of the pristine nature into the cauldrons of devastation.