Situated 320km (137miles) from the capital, Ndola is an important commercial center and the gateway to the mineral producing region of Zambia. In the town there is the Copperbelt Museum. Outside are two sunken lakes, Lake Chilengwa and Lake Kashiba, the latter is especially good for birdwatching. Near the border with Zaire is the Dag Hammerskjold Memorial site marking the spot where the UN Secretary General was killed in a plane crash during the Katanga Crisis in Zaire in 1961. Visitors should be cautious due to its proximity with Zaire.