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Lake · Ghana

Lake Bosumtwi

Lake Bosumtwi fills a round crater in Ghana that formed when a meteorite hit the Earth about 1.07 million years ago. It is Ghana's only natural lake, and the Ashanti people see it as sacred.

Where is Lake Bosumtwi?

Countries on its shores: Ghana.

Largest lake of: Ghana.

Middle of the lake: 6.51° N, 1.41° W

The story behind it

Lake Bosumtwi lies in the Ashanti Region, about 30 km south-east of the city of Kumasi. Its crater is 10.5 km wide, and the lake inside is about 8 km across and about 80 metres deep. Steep crater walls rise all around, and small streams run down them into the lake. No river flows out, so the water can only leave by evaporating or seeping into the ground. About 30 villages lie near the lake. For the Ashanti people it is sacred: they believe that the souls of the dead come here to say goodbye to the goddess Asase Ya. That is why fishing on the lake is only allowed from simple wooden planks. Eleven kinds of fish live in the water, and some are found nowhere else. Bosumtwi is Ghana's largest natural lake – in fact its only one. Lake Volta is much bigger, but it was made by a dam.

Find it on the globe

Lake Bosumtwi is there as a small blue dot with its name, right on the water. From far away the planet is only a blue ball; detail arrives as you zoom in, and this one appears once you are close enough. Open it on the globe.

It sits at its real coordinates, not near them — the same numbers listed in the facts above. Switch off the layer for this kind of place and it disappears again; the buttons for that are down the right-hand edge.

Questions children ask

How big is Lake Bosumtwi?

Lake Bosumtwi covers about 49 km² and is about 8 km across. It is about 80 metres deep.

How did Lake Bosumtwi form?

About 1.07 million years ago a meteorite crashed into the Earth here and made a crater 10.5 km wide. Over time, the crater filled with water and became the lake.

Why do fishermen on Lake Bosumtwi use wooden planks?

The Ashanti people believe the lake is sacred, a place where souls say goodbye to the goddess Asase Ya. Out of respect, fishing is only allowed from simple wooden planks.

Where these numbers come from

Every figure on this page was checked against public reference sources before publication. Where sources genuinely disagree, the text says so.

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