The giant Kariba Dam which will harness the Zambasi waters of a 180-mile long man-made lake to supply hydro-power to Northern and Southern Rhodesia by 1963 thrusts upwards as thousands of tons of concrete pour into the main wall.

Work is now six months ahead of schedule. Engineers and the army of workers battled against time following the big floods earlier this year.

A new road bridge is being built to replace the one swept away. When completed it will be an important artery to boost construction.

Some 85,000 cubic yards of concrete are being poured into the main dam wall every month. The wall already dwarfs the men building it, men who are getting within their grasp a mighty river.

When completed it will be 400 feet high, holding back the power of what will become the largest man-made lake in the world.

In all the Kariba project will cost GBP113M. Over 40,000 people will have to be moved and rehoused before the Zambasi is fully controlled. When it is Kariba will be the focal point too of an expansive tourist industry.