Mount Warning is a mountain in Australia. Mount Warning is only shown on Ferngully: The Last Rainforest, but not in the second flim. In the prologue, it is where Hexxus first emerged from in ancient times when it erupts, destroying much of FernGully, until Magi calls upon the powers of nature to imprison him in a tree until it is accidentally cut down by Tony and Ralph years later. The mountain has been dormant ever since.