Images are pictures created with words. Common forms of imagery are similes, metaphors and personification.
One of the strongest images in the story is the one the story opens with.
They discovered the girl’s head protruding from the mudpit, eyes wide open, calling soundlessly. (p. 1)
This is a very engaging way to begin the story, especially the use of the images “protruding” and “calling soundlessly.”
This image is followed up with other very powerful images, including “odor of death,” “wails of the injured filled the air” and the simile where her head is compared to a “black squash.”
The television cameras transmitted so often the unbearable image of the head budding like a black squash from the clay that there was no one who did not recognize her and know her name. (p. 1)
A simile compares two things using the words “like” or “as.” Other similes are used, describes the lava as curling “like waves of foam”. The geologists warnings “sounded like the tales of frightened old women” (p. 2)
There are also examples of personification. The towns are described as going about their everyday business “deaf to the moaning of the earth” (p. 2) The volcano with “a prolonged roar announced the end of the world” (p. 2) and “the air around him seemed as murky as the mud” (p. 4). You will see that there are many other similes.
Finally, there are metaphors, which compare without like or as. The lava is described as a “viscous soup” (p. 2)