Heaven's Canyon is a bottomless chasm that serves as a divide between Aurora Island and a smaller island called Ancra. It is seen in Episode 9 and Episode 10 of the anime series, when the Searchers have to cross from the larger part of the island that is relatively untouched by evil to the part that has been very nearly enslaved by Pixie and her minions.
Heaven's Canyon is ringed on either side by mountainous desert, and continues on as the Mandy Desert on the next continent. It is filled with huge columns of stone that jut out of the swirling mist. It is assumed that this geological rift was created during the earthquake that separated the continents.