Every year, August lashes out in volcanic fury, rising with the din of morning traffic, its great metallic wings smashing against the ground, heating the air with ever-increasing intensity. Henry Rollins
The geysers and hot springs of the Yellowstone are another proof of recent volcanic activity. Ellsworth Huntington
The interior of Mexico consists of a mass of volcanic rocks, thrust up to a great height above the sea-level. Edward Burnett Tylor
All great movements are popular movements. They are the volcanic eruptions of human passions and emotions, stirred into activity by the ruthless Goddess of Distress or by the torch of the spoken word cast into the midst of the people. Adolf Hitler