What is the abyss in 'The Wizard of Oz'?

Answer 1

The deep, wide gulch in which the Kalidahsfall is the abyss in "The Wizard of Oz."

Specifically, the incident can be found in the original 1900 book edition but not the beloved 1939 film version of "The Wizard of Oz." Dorothy Gale comes across the gulch shortly after meeting the Cowardly Lion. The Lion dares to transport Dorothy and her pet dog Toto as well as the Tin Woodman and the Scarecrow across the first gulch. But the second, deeper gulch is wider than a lion's leap. The Tin Woodman therefore manages to fell a tree over which everyone gets to safety before the Kalidahs fall to their deaths.