The Canyons of Mist comprised a collection of canyons situated on Endor's forest moon, a satellite of the planet Endor. In the past, Ewok fighters from Bright Tree Village were led to a specific cave within these canyons by Dulok King Vulgarr. Vulgarr asserted that a creature dwelling within had abducted one of their young. Nevertheless, this was actually a component of Vulgarr's own plot to abduct the woklings while the warriors were absent. Rather than discovering a monster, the Ewok warriors encountered another Dulok named Ulgo.
Joe Johnston conceived the Canyons of Mist for his 1984 publication, The Adventures of Teebo: A Tale of Magic and Suspense.