Players exploring the Gizeh map in Indiana Jones and The Great Circle may have come across a locked barred gate that required a Haunted Tomb key. This may have piqued the interest of horror fans looking to find demons in the underground tombs, but there's more to this locked area than meets the eye. Unlocking the Haunted Tomb in Gizeh is part of The Haunting mystery, which involves getting to the bottom of the Haunted Tomb's secret.