Giant hollow logs are the empty husks of massive fallen trees. Fictional hollow logs are often large enough that a person can fit inside, often using them to either hide from danger or as a tunnel to move from one place to another. In fantasy worlds, if the log is large enough, they may serve as a building or home to forest denizens. Giant hollow logs often feature a tree hollow which may function as a peephole. Giant hollow logs may come from giant trees.