the only sharp and definite boundary of the great karoo is formed by the most inland ranges of cape fold mountains to the south and south-west. the extent of the karoo to the north is vague, fading gradually and almost imperceptibly into the increasingly arid bushmanland towards the north-west. to the north and north-east, it fades into the savannah and grasslands of griqualand west and the highveld. the boundary to the east grades into the grasslands of the eastern midlands.