Complex sentence: The highlands, the large central plateau, is divided by the Mau Escarpment rising from the border with Tanzania up to the Cherang'any Hills, fencing the plateau that rises to the slopes of Mount Elgon.
Split into simpler sentences: The highlands, the large central plateau, is divided by the Mau Escarpment which rises from the border with Tanzania up to the Cherang'any Hills. The escarpment bounds the plateau that rises to the slopes of Mount Elgon.