It would stop all navigation, except during the highest floods; the rocks showed that the water then rises upwards of eighty feet perpendicularly.
Still keeping the position facing the cataract, on its right side rises Mount Morumbwa from 2000 to 3000 feet high, which gives the name to the spot.

On the left of the cataract stands a noticeable mountain which may be called onion-shaped, for it is partly conical and a large concave flake has peeled off, as granite often does, and left a broad, smooth convex face as if it were an enormous bulb.

These two mountains extend their bases northwards about half a mile, and the river in that distance, still very narrow, is smooth, with a few detached rocks standing out from its bed.

They climbed as high up the base of Mount Morumbwa, which touches the cataract, as they required.

The rocks were all water-worn and smooth, with huge potholes, even at 100 feet above low water.