Lyttelton Harbour / Whakaraupō is one of two major inlets in Banks Peninsula, on the coast of Canterbury, New Zealand; the other is Akaroa Harbour. Approximately 15 kilometres (9.3 mi) in length from its mouth to Teddington, the harbour sits in the erosion caldera of the ancient Lyttelton Volcano, the steep sides of which form the Port Hills on its northern shore. The harbour provides access to a busy commercial port at Lyttelton which today includes a petroleum storage facility and a modern container and cargo terminal.