Wonder

Kalambo Falls

Kalambo Falls, Zambia
Kalambo Falls / , Wikimedia Commons / CC BY-SA 3.0

WorldBlue  In short

Kalambo Falls offer two in one – one of the most spectacular waterfalls in this part of Africa and one the most important archaeological discoveries south of Sahara.

4.7 out of 10 stars 46.8%

GPS coordinates
8.5964 S 31.2396 E
Location, address
Africa, Tanzania, Rukwa and Zambia, Northern Province
Waterfalls, Early human finds, Ancient settlements
Height
221 – 235 m
Width
3.6 (dry period) – 18 m and more (flood period)
Stream
Kalambo

Map of the site

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WorldYellow In detail

How the river cut through the rising cliffs

Kalambo Falls most certainly was known to people for hundreds of thousands of years – much longer than most other great waterfalls of the world. But the first white people saw these falls just one century ago – sometimes around 1913.

This is not too surprising – Kalambo River is a comparatively small stream and the falls are hidden from accidental glimpse by a deep canyon below the falls and hilly terrain – above the falls.

Waterfalls of Kalambo River

Kalambo River is rich with falls. Some 11 km upstreams from Kalambo Falls there are four cascades with a total height of 30.5 m – Sansia Falls.

This is multiple times exceeded by Kalambo Falls – a 221 – 235 m tall waterfall with a single plunge. Initially, explorers were convinced that falls are more than 300 m tall but the measurements in the 1920s gave a more modest result – a bit more than 200 m. In 1956 there were made more exact measurements by J.W.Clayphan, Department of Surveys and Lands, Northern Rhodesia – he obtained 221 m height. Later measurements give more impressive height – up to 235 m.

Kalambo Falls are considered to be the second-highest uninterrupted waterfall in Africa after Tugela Falls (South Africa). This seems to be exaggeration: for example, Jinbar Falls in Ethiopia have even taller, at least 500 m tall plunge.

Kalambo Gorge

From the upper rim of Kalambo Falls opens an impressive sight to Lake Tanganyika plains. Below the falls is located gloomy, incredibly deep, and dark canyon – Kalambo Gorge – with a narrow thread of the river far down.

Kalambo Gorge continues for 5 km and then opens up to the plain around Lake Tanganyika. The canyon is approximately 1 km wide and up to 300 m deep.

The river at the bottom of this giant canyon in some places has formed a chasm – 3 m narrow, up to 30 m deep gorge. Over the 8 km long distance between the base of Kalambo Falls and Lake Tanganyika the river falls by 160 m, forming two waterfalls in the narrow chasm – 15 m and 9 m tall.

The rise of Earth’s crust

The force of water has slowly eroded a very sturdy rock: the Precambrian – early Paleozoic quartzite, finally reaching a layer of shist below it.

The fact that falls are 221 – 235 m tall but the canyon below the falls – up to 300 m deep – is unusual. Even more unusual it is to see that the upper rim of the canyon further towards Lake Tanganyika is steeply rising upwards. Water always finds the lowest place where to flow – how could it be that at first Kalambo River was flowing in a higher place and then somehow retreaded to a lower one?

This phenomenon has an interesting explanation – the crust of Earth in the area around Kalambo Gorge is rising upwards. Geological processes around Lake Tanganyika are busy creating a new ocean – Lake Tanganyika is becoming wider and the forces of moving tectonic plates are rising the ground on both sides of the lake.

The Kalambo River has to claw itself through a slowly rising ground. Thus the river has created the narrow chasm at the bottom of Kalambo Gorge.

Marabou storks

Near the falls the walls of the canyon are vertical cliffs. On the inaccessible ledges of these cliffs are located nests of marabou storks. These large birds are often seen flying in the turbulent air around the falls.

Treasure store for scientists

The archaeological importance of the site was discovered in October 1953. A few hundred meters from the upper rim of the falls in sharp bends of the river were found man-made artifacts – sherds of pottery and stone flakes.

During the decades of archaeological research scientists (notably – the great explorer of the past of Africa J. Desmond Clark) have learned that here is located one of the most important archaeological monuments south of Sahara.

Timeless settlements around the lake

Archaeological evidence shows that people at Kalambo Falls have been living for at least 250,000 years. Settlements here existed for most of the time – up to the recent past, leaving one of the most complete human culture-stratigraphic records in Africa.

250,000 years ago – before the last ice age – Kalambo River before the falls formed a small lake. Climate back then was similar to contemporary climate and a body of water was a good selection – it attracted animals and there was plenty of fish.

Sequence of Stone Age cultures

Ancient people mastered making of stone tools – here have been found stone tools made in late Acheulean technique from the local quartzite. Were found also stone hearths and even well preserved wooden clubs and digging sticks have been found from this period. Some of the oldest fireplaces in the world were burning here some 60 000 years ago.

After Acheulian people here were living people of Sangoan and Lupemban cultures – which are also very ancient Paleolithic cultures.

Some 10 000 years BC (imagine – these are recent times by the scale of Kalambo Falls settlers!) here were living bearers of Magosian culture and some 4 000 years BC – Wilton culture, representing Mesolithic time.

The eternal settlements around Kalambo Falls continued to thrive even in the Iron Age – around the 4th century AD when here arrived Bantu farmers.

Nowadays around the Kalambo Falls live Lungu people. This area is comparatively sparsely populated.

Research at Kalambo Falls continues – as the science of archaeology develops, there are justified expectations that the ancient settlements at Kalambo Falls will provide new knowledge about our common past.

References

  1. J.D.Clark, Kalambo Falls Prehistoric Site, Volume I – III. 1969 – 2001, Cambridge University Press.

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