- For the episode The Forest of Fear, see An Unearthly Child.
The Forest of Fear was a dense wilderness ca. 100,000 BC. The First Doctor, Susan Foreman, Ian Chesterton and Barbara Wright escaped into the wilderness and were followed by Za and Hur. Za was wounded by a beast, allowing the Doctor's party to escape. They later returned to the forest and ran from the cavemen. (TV: An Unearthly Child)