Rolling Prairie
Thinly peopled country beyond the Winkie River, all uphill and downhill, crossed on the search for Ozma.
First named in The Lost Princess of Oz, ch. 6
Long before night the travelers had crossed the Winkie River near to the Scarecrow’s Tower (which was now vacant) and had entered the Rolling Prairie where few people live.
Where this is
placed In Oz worked out
read out of the chapters cited on this page, not stated in any one sentence of them
Crossed after fording the Winkie River near the Scarecrow's Tower, within the Winkie Country of Oz (Lost Princess of Oz ch6).
What the books say it is
appearance all uphill and downhill 1 chapter
The Rolling Prairie was not difficult to travel over, although it was all uphill and downhill, so for a while they made good progress.
The Lost Princess of Oz, ch. 7