“Halfway to Dunedin from Christchurch” – Location Not Identified in Context

The provided context does not contain any information about a specific place located halfway between Christchurch and Dunedin. Without additional details (e.g., town name, highway, landmark), it’s impossible to answer. The midpoint of State Highway 1 between the two cities is roughly near the town of Oamaru or the Waitaki River area, but this is general geographic knowledge, not from the given text.