Cave Inn
Cave Inn is a mysterious door found at the end of the underground subway beneath Down Town.
First named in The Hungry Tiger of Oz, ch. 9
"'Cave Inn,'" roared the Hungry Tiger, reading the door plate over the little boy's shoulder.
Where this is
placed Beyond the desert worked out
read out of the chapters cited on this page, not stated in any one sentence of them
An underground door found beneath Rash, and the party explicitly must still 'cross the Deadly Desert before we come to Oz' — Rash and its underworld are outside Oz.
What the books say it is
appearance cave 1 chapter
At the third bump, the door of Cave Inn flew open, the floor of the cave itself, tilted forward and the four adventurers fell through.
The Hungry Tiger of Oz, ch. 9