sentences:  When Kaunda and other nationalists broke away from the ZANC and launched their own political party, the United National Independence Party (UNIP), in 1960, they chose the isolated site to hold their first party conference where it would not draw the attention of the North Rhodesian authorities.The area was centrally located, however, enabling more participants to come from all parts of the country.Situated near the Mulungushi River approximately north of Broken Hill (later renamed Kabwe), the Rock could accommodate up to 2,000 people for outdoor speeches and for lodging in temporary shelters.