The southern plains sit on volcanic soil rich in phosphorus and calcium, which is why the wildebeest return to these particular short grasses to calve and not somewhere else along the route. From December to March the plains fill with newborns finding their legs, and with the predators that follow them. Cheetah and leopard work the kopjes around Naabi Hill, and a lion pride holds the ground there. Naabi Hill Gate, where the Ngorongoro highlands give way to open plain, stands close by.
From June the camp stands at Kogatende, close enough to the Mara River that a crossing can be reached in a morning rather than after hours of driving. Wildebeest gather on the banks for hours, sometimes days, before they commit to the water. Nile crocodiles are waiting when they do, hippos hold the pools between crossings, and lion prides work the corridors on both banks. The Nyamalumbwa Hills, a rhino protection area, lie in the same northern sector, where the country is undulating savannah broken by kopjes and old acacia woodland.
Wildebeest gather on the banks for hours, sometimes days, before they commit to the water.
Nights carry the sound of hooves, the bleating of calves and, some evenings, lions calling near the tents. Before dawn a thermos of Tanzanian coffee arrives quietly on the veranda. There is no guest Wi-Fi, no spa and no gym, and in their place is a sky with no light in it but its own. Water is heated and carried to a canvas bucket shower. At dusk everyone gathers at the fire, and dinner follows at one long table under white cloth, the talk running to whatever the day produced.
Days run on game drives, morning, afternoon or the whole of it, in open-sided vehicles. Balloons lift off before sunrise over the herds and come down to a bush breakfast. Fly-camping puts guests behind mesh walls with nothing else between them and the stars. Meals move with the day: breakfast on a kopje, lunch under an acacia, sundowners wherever the light is best that evening. The camp itself is canvas, local timber and brass, lit throughout by solar power, and night driving is not permitted inside the park, so after dinner the dark belongs to whatever is moving beyond the canvas.