The best crag on the Port Hills (for climbs in the grade 21–26 range.) Being perched on a steep hillside above Lyttelton Harbour adds to the crag's lovely atmosphere. The crag gets little sun, so is great in summer, especially on those hot nor'west days. Sheltered from northerly and westerley winds.
The crag has a somewhat unfair reputation for bold climbs. About half the routes are very friendly clip-ups. Some of the routes require you to perform moves above a bolt, but the climbs are never really dangerous. There are a couple of trad routes, and a couple of mixed routes, for which the gear is always adequate to good.
The sporadic and disjointed nature of the route development here (combined with the 2011 earthquake) has led to a bunch of link-ups, alternative starts, filler-routes, collapsed features, and generally confusing guide information. This page seeks to provide clear descriptions of the commonly climbed, and logical lines (as secondary to being a historical record. The existing print guides provide a good history of the crag).
The numbered routes are the major (best) lines.

This crag is on the Lyttelton Harbour side of the hills, above Livingstone Bay. Drive to Evans Pass on the Summit Road, and drive 3km towards Godley Head. Park in a layby directly above Taylor's Mistake on the Lyttelton side, next to the two large watertanks, use the stile that accesses the Crater Rim Walkway, then follow a sheep track horizontally westward towards Lyttelton above a couple of rocky spurs until you glimpse the profile of the Wall – an awesome sight! Continue on the track around the top of a broad gully, then drop down the gulley and traverse across to the bottom of the wall.