Grubber

Grubbers were a type of gigantic caterpillar that dwelt underground. They bored through the soil of Toril and could punch their way through solid stone.

Description
They were enormous in scale. They could be as big as 10 feet (3 meters) across and grow upwards of 80 feet (24.4 meters) in length. They were pale grey in color.

Behavior
Grubbers were herbivores that fed on fungi and molds.

Appearances
The Dark Elf Trilogy
 * Novels:
 * Exile