Oppenheimer Family Converts 43 South African Farms Into 118,000-Hectare Kalahari Wildlife Reserve

South African billionaire Nicky Oppenheimer’s family has converted 43 former commercial cattle and sheep stations into the 118,000-hectare Tswalu Kalahari Reserve, cementing its status as the largest private wildlife sanctuary in the country.

Fences vanished. Livestock gave way to desert predators. The vast tract—spanning roughly 292,000 acres of the southern Kalahari—now shelters desert black rhinos, black-maned lions, cheetahs, and African wild dogs on land once worn down by intensive agricultural exploitation dating back to the nineteenth century.

From Overgrazed Livestock Stations to Vast Wilderness

British businessman Stephen Boler ignited the ambitious rewilding drive in 1995 when he bought a cluster of overgrazed cattle holdings and christened the unified land Tswalu. Within two years, Boler annexed another 28 properties. He tore down derelict brick outposts, unspooled thousands of metres of agricultural fencing, and hauled away rusty farm machinery to stitch the fragmented ecosystem back together.

Then came the animals. Boler reintroduced indigenous Kalahari game that had been cleared out by generations of pastoralists, re-establishing founding stocks of black rhinos and iconic black-maned lions. But time cut his project short. Boler died suddenly in 1999—leaving the fate of the nascent reserve in jeopardy.

Boler’s Dying Bequest and the Oppenheimer Expansion

A chance meeting months before Boler's death changed everything. Boler had hosted Nicky Oppenheimer at the property earlier in 1999, touring the vast red dunes and showing the diamond magnate the progress of his ecological restoration. Oppenheimer was captivated by the sheer expanse of the Kalahari.

Boler remembered that reaction. In his will, Boler stipulated that Tswalu should be offered entirely to the Oppenheimer family, trusting them with the financial firepower and personal commitment required to carry out the wilderness project. Oppenheimer accepted without hesitation.

Subsequent acquisitions under the Oppenheimer family absorbed additional adjacent acreage, expanding the sanctuary across 43 former livestock operations into one continuous tract of protected wilderness. In 2014, authorities granted Tswalu formal recognition as a protected area, anchoring its status as a vital genetic reservoir and biodiversity corridor.

Biodiversity, Field Research, and the Ecotourism Model

To pay for high-cost boundary patrols, anti-poaching operations, and ecological management, the reserve runs a high-value, low-density ecotourism network. Tswalu limits guest capacity to three luxury camps: The Motse, Tarkuni, and the wilderness pavilion camp Loapi. Each group receives an exclusive vehicle, wildlife tracker, and guide to keep human footprints negligible across the fragile terrain. Guests take part in tracking runs, rock-art excursions, birding, and visits to habituated meerkat colonies.