From the Super Mario Wiki
Blackforest Plateau is the third area in the Game Boy and Game Boy Color game Donkey Kong Land III. Located in the Northern Kremisphere, to the north of the Primate Plains and to the west of the Great Ape Lakes, it replaces Cotton-Top Cove from Donkey Kong Country 3 as the third world in the game. This area is ruled by the gigantic spider Arich. The world's name is a pun on Black Forest gateau, a type of cake originating from Germany.
Despite its name, Blackforest Plateau offers a wide variety of landscapes. The high western plateau is occupied by a lake, whose waters flow from the clifftops into the valley, creating a large waterfall. This cascade feeds a river that meanders through the area. Because of their high latitude, the northern regions of Blackforest Plateau have a colder climate, and mostly consist of high mountain ranges, tundras and taigas, planted with various conifers. A redwood forest appears in the eastern region.
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