New Zealand fell to their third lowest Test score on the opening day of the two-match series against South Africa at Newlands.
Vernon Philander claimed five wickets for seven runs as the tourists, who won the toss and elected to bat, were bowled out for a paltry 45.
The home side replied with 252 for three to lead the opening Test by 207 runs. Alviro Petersen hit an unbeaten century and there were also half-centuries for Hashim Amla and Jacques Kallis, who became the fourth player to pass 13,000 Tests runs.
Philander ripped through the New Zealand order as South Africa began the series in the manner befitting the world's number one ranked side. Only Kane Williamson reached double figures but his top score of 13 was typical of a New Zealand batting display which crumbled in just 19.2 overs.
Philander struck in the second over as he claimed a wicket maiden, Martin Guptill's outside edged being snapped up by AB de Villiers behind the stumps. The home crowd only had to wait four more overs before Philander struck for a second time, cleaning up Brendon McCullum (7).
Three balls later Dean Brownlie (0) looped a catch to Graeme Smith at slip. Philander returned to remove Williamson lbw as New Zealand finished the eighth over on 27 for four.
Philander and De Villiers combined to remove BJ Watling for a duck before Morne Morkel got in on the act to dismiss James Franklin, caught by Smith for one. When Doug Bracewell was bowled by Steyn for two, New Zealand were 31 for seven and looking at an embarrassing first-innings total.
Jeetan Patel (5) was the next to go after Amla dived to his left to claim a stunning one-handed catch off the bowling of Morkel. Travis Boult had contributed just one when he was caught by De Villiers off Morkel and Steyn ended the rout when he caught and bowled Daniel Flynn for eight.
Before lunch South Africa lost captain Smith when he was trapped lbw by Bracewell. But Amla and Petersen put on a century before the second wicket fell. Amla had scored 66 when he played around a delivery from Franklin and fell lbw. Petersen and Kallis guided South Africa to 119 for two at tea and a lead of 74 runs.
Kallis went past 13,000 runs when he attempted to drive Bracewell and a thick outside edge sent the ball to the third-man boundary. Kallis (60) became the third wicket to go with the total on 212 when he edged Boult to Watling. Petersen, 103 not out, and De Villiers (19no) steered South Africa to 252 for three at the close for a lead of 207.
