This location is nearby Mount Sunday (Edoras). From this location, drive about 3 kilometres further northwest over Hakatere Potts Road. In front of the mountain range on the opposite side of the valley, a few trees are visible. Just to the right is where Helms Deep was superimposed onto this mountain range. The GPS locations refer to the wide-angle viewpoint.
Click the image to toggle between the original and a colour-graded version that matches the actual film scene.
GPS coordinates: -43.5276, 170.8843
The link opens in Google Maps (desktop) or in the Google Maps App (Android).