The Morokweng impact structure is an impact structure buried beneath the Kalahari Desert near the town of Morokweng in South Africa's North West province, close to the border with Botswana.

[1] Estimates of the diameter of the structure vary widely with some studies suggesting a smaller size of 75–80 km (47–50 mi) in diameter while others suggests a much larger size of around 240 km (150 mi) or more.

[2][3][4] Discovered in 1994, it is not exposed at the surface, but has been mapped by magnetic and gravimetric surveys.

Core samples have shown it to have been formed by the impact of an L chondrite asteroid estimated to have been 5 to 10 km (3.1 to 6.2 mi) in diameter.

This discovery was unexpected, since previous drillings on large impact structures had not produced such fragments, and it was thought that the asteroid had been almost entirely vaporised.