Iron Bars
Metal bars that form a cage in front of Yoop's cavern.
First named in The Patchwork Girl of Oz, ch. 20
a row of thick iron bars, the tops and bottoms being firmly fixed in the solid rock
What the books say it is
made of iron 1 chapter
a row of thick iron bars
The Patchwork Girl of Oz, ch. 20
size thick 1 chapter
In one of the rock walls--that at their left--was hollowed a great cavern, in front of which was a row of thick iron bars, the tops and bottoms being firmly fixed in the solid rock.
The Patchwork Girl of Oz, ch. 20