Te Tihi-o-Kahukura / Castle Rock is a prominent rock outcrop in the Port Hills above Christchurch, New Zealand. It is a short distance north of Te Moenga-o-Wheke / The Tors, on the northern side of Summit Road. It sits directly to the west of the Bridle Path and the Lyttelton road tunnel. The rocky outcrop itself is 167 metres (548 ft) long, 83 metres (272 ft) wide and up to 24 metres (79 ft) high.