Katse Dam is a massive work of engineering. At 185 meters tall it is Africa's largest dam, holding back about 2 billion cubic meters of water. It is the first in a series of dams built as part of the Lesotho Highlands Water Project, which will route fresh water into neighboring South Africa in exchange for tens of millions of dollars each year. The water from the Katse Dam flows 45 kilometers north in an underground tunnel to the Muela hydroelectric power station, and generates electricity for the entire country of Lesotho, before flowing across the border into South Africa.

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