 Generally, the top of the Escarpment is almost table-top flat and smooth, even in Lesotho.The "Lesotho Mountains" are formed away from the Drakensberg escarpment by erosion gulleys that turn into deep valleys that contain the tributaries that flow into the Orange River.There are so many of these tributaries that it gives the Lesotho Highlands a very rugged mountainous appearance, both from the ground and from the air.