Monkey Mountains & Chimpanzee Clouds
From the Super Mario Wiki
Found in the mountains of Donkey Kong Island, presumably near Gorilla Glacier and Kremkroc Industries, Inc., Monkey Mountains possesses a vast amount of cliffs and caves, some of which seem to be connected and seemingly go down for miles. Aside from a sparse amount of trees, there is nothing really located on Monkey Mountains; a small amount of snow can be found in the area, however.
Chimpanzee Clouds is above the mountains, as the name would imply, in the clouds. Due to its small size, only three levels are in Chimpanzee Clouds: Track Attack, Sky High Caper, and Collapsing Clouds.
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