Rangipo Desert

Where it sits. The Rangipo Desert occupies roughly 30,000 hectares of the central North Island volcanic plateau, east of Ruapehu, Ngauruhoe and Tongariro and west of the Kaimanawa Range, between about 600 and 1,100 metres above sea level. State Highway 1 crosses it for some fifty kilometres between Waiouru in the south and the descent to Tūrangi in the north — the stretch universally known as the Desert Road, and the highest point on any New Zealand state highway at around 1,074 metres. The land is open, treeless and faintly undulating, covered in low red tussock and bare gravel, with the three volcanoes standing to the west and nothing at all in between. Wind moves across it constantly.

Why it is bare. It is not a desert in any climatic sense. Annual rainfall here runs between roughly 1,500 and 2,500 millimetres, more than most of the settled parts of the country receive. The bareness is a soil and exposure problem. The Taupō eruption of roughly 1,800 years ago — one of the most violent volcanic events anywhere in the last five millennia — buried this ground under metres of pumice and ignimbrite, and the resulting soils are coarse, sterile and so free-draining that water disappears through them almost immediately. Add frequent frost, a short growing season, and a persistent desiccating westerly funnelled between the mountains and the ranges, and the result is a landscape that reads as arid while being drenched. Only red tussock, a few hardy shrubs and lichens have made a durable go of it.

On screen. This is where the armies of Mordor marched. The Black Gate — the Morannon — was built as a physical set on the Rangipo Desert in 2000, and the surrounding plain of Gorgoroth in The Return of the King is this ground: the muster of orcs, the arrival of the Army of the West at the gate, and the final battle before the Ring goes into the fire. New Zealand Army personnel from the adjacent Waiouru camp were used as extras in the massed ranks, which is one reason the marching in those sequences looks like marching rather than choreography. The choice of location was deliberate on two counts: the plateau offered a genuinely lifeless-looking foreground with no vegetation to remove and no buildings, power lines or roads in the sightlines, and it sat inside a controlled military area where a large set could be built and struck without public access complicating the schedule.

Access, and what you cannot reach. That same military control still applies. Much of the southern desert lies within the Waiouru Military Training Area, the New Zealand Army's principal manoeuvre and live-firing ground, and it is closed to the public with signage that is not decorative. The Black Gate site itself is not a visitable location — the set was removed entirely after filming and the land is restricted. What is freely accessible is the Desert Road corridor: pull-offs along SH1 with unobstructed views west to Ngauruhoe and Ruapehu, the Waiouru end with the National Army Museum, and the crossing of the Whangaehu River, whose water runs milky and acidic because it drains Ruapehu's Crater Lake and carries dissolved sulphur straight off the volcano.

What the light does. The desert repays timing more than most landscapes. Early morning gives long horizontal light across the tussock and the clearest chance of unclouded volcano summits before convection builds. Late afternoon turns the tussock a hard copper-red against the dark andesite of the mountains. In winter, snow lies across the plain and the contrast between white ground and black volcanic cones is the single most photographed condition here. Cloud sits on the peaks a great deal of the time, and it is entirely normal to drive the whole road and see nothing above 1,200 metres.

Getting there and timing. The Desert Road is the direct SH1 route between Taupō and the lower North Island, so most travellers cross it without meaning to. Waiouru sits at the southern end with fuel and the army museum; Tūrangi at the northern end. There is no accommodation, no water and no phone coverage across long sections of the plain, and stopping requires care because the road carries heavy freight at speed. The road closes for snow and ice several times most winters, sometimes for a day or more, with a long detour around the western side of the mountains as the alternative. Warm clothing is worth having in the car in any season: the wind chill at 1,000 metres on this plateau is a different proposition from the valley temperature twenty minutes away.