Mist Valley
Mist Valley is a valley filled with a floating mist that never clears, where the Mist Maids live.
First named in Glinda of Oz, ch. 3
I believe this is a Mist Valley, where these moist clouds always remain, for even the sunshine above does not drive them away.
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
Glinda of Oz ch1 establishes the Skeezer country is marked on the 'Wogglebug's Map of the Land of Oz,' placing this leg of the journey within Oz.
What the books say it is
texture dense as smoke 1 chapter
From the top of the hill Ozma and Dorothy looked down into the valley beyond and were surprised to find it filled with a floating mist that was as dense as smoke.
Glinda of Oz, ch. 3