there is a fort erected by the portuguese in 1671. the region is noted for its 107-metre- (350-foot-) high calandula waterfalls on the lucala river; the luando game reserve in the south; the milando animal reserve in the north; and the pungo andongo stones, giant black monoliths associated with tribal legend. most of the region’s inhabitants are members of the mbundu peoples. the chief economic activities are stock raising.