Mount Sunday is a couple of hour's drive from Christchurch, nestled between Mt Potts and Erewhon Stations. In NZ a station is not just something found on a railway line, it is also a term referring to large high country farms or ranches and that is the context for Mt Sunday. It's name refers to days gone by when the farm hands would race their horses to the peak on their day off, Sunday. Kirwin and I found ourselves atop Mt Sunday during a 4WD tour on 15-Dec-2008.
Another interesting fact about the filming of Lord of the Rings is that the Tolkein family requested that none of the sets were left in tact upon completion. This was out of respect for J.R.R. Tolkein's imagination which held that Middle Earth was located in Europe. The set for Edoras took 8 months to build, and it was only used for about a week's worth of filming before being dismantled. Prior to construction, the position of every plant on Mt Sunday was noted using GPS. They were then temporarily replanted in a purpose-built nursery. After the set was dismantled all the plants were returned to their original position. Today there are very few signs that Edoras ever existed there. Now, that's commitment to the environment!