The park's most celebrated landscape is the Busanga Swamp and its surrounding plains, a Zambezian flooded grasslands ecoregion that holds some of the densest herbivore populations in south-central Africa. In the dry months the animals compress toward the marshy creeks and open water. Red lechwe bound across the shallows, puku graze in tight family groups, Cape buffalo move in columns that can be a thousand strong. Where there are herbivores there are predators, and Busanga is lion country, leopard country, and the hunting ground of wild dogs that traverse distances a vehicle cannot follow. The birdlife is almost absurd in its variety. Fish eagles nest in every other tree, and one famous wild eagle, nicknamed Wilbur, has been trained by a long-serving skipper on the Lufupa River to swoop to the boat for tossed fish, a spectacle that still draws visitors who want the moment the bird is on the water and their heartbeat is not.

The list of hoofed animals reads like a zoological census. Puku, kudu, red lechwe, impala, waterbuck, bushbuck, oribi, blue duiker, Burchell's zebra, Cape buffalo, blue wildebeest, and roan antelope all graze within park boundaries. Beside them move warthogs, mongooses, Nile monitor lizards, porcupines, civets, servals, terrapins, vervet monkeys, and bushbabies. Hippo pods populate the river pools in astonishing numbers. Huge crocodiles sun on the banks. Elephants, after decades of devastating poaching, are slowly returning and now wander into some of the lodges and camps. Of the traditional "big five," only rhino and giraffe are missing from the northern reaches. Rhinos were poached out entirely, and debate continues about whether to reintroduce them. The question is not sentimental. It asks whether the protection now in place is strong enough to keep them alive.

The forests of Kafue grow to sizes that surprise first-time visitors. Baobabs, mahogany, sausage trees, sycamore figs, ilala palms, wild date palms, and acacia dominate, many of them giants of their species thanks to the north's heavy rain. Near the Busanga Flood Plains stands one enormous baobab at a place called Treetops Conservation School Camp. The camp admits small groups of Zambian schoolchildren during the dry season for short stays, teaching the next generation about the wildlife their country still carries. After years of neglect it was renovated by a group of Lusaka schools, a quiet but vital investment, because the future of Kafue depends less on tourist dollars than on whether Zambian children grow up seeing themselves as inheritors of the park rather than visitors to it.

The northern half of Kafue receives far more rain than the south, which makes the timing of a visit crucial. From July to October, during the dry winter months, roads are passable, lodges are open, and animals concentrate near water. From November through April, much of the north vanishes beneath floodwater. Plains become lakes. Roads become rivers. Lodges close. After the rains pull back, you can still see where the flood reached. Waterweed hangs high in the branches of trees, bridges have collapsed, tracks need repair, and the land is recharged for another year. The park is accessible by road from Lusaka via Mongu on the M9, a bus ride of four to five hours, followed by a pickup with the lodge of your choice. It is possible to drive yourself. Many people fly in and let the lodges handle the rest.

If any form of travel justifies the word "pilgrimage," it is a walking safari in Kafue. To walk with a guide who knows the grass, the prints, and the shift of wind is to remember that humans belong to this landscape and were once its most vulnerable members. Jeffery and McKeith Safaris run walks whose guides have spent years learning this country. Boat trips on the Lufupa and Kafue Rivers offer a different scale of intimacy, drifting close enough to a hippo to hear it breathe, watching a fish eagle scan the water from a branch, casting a line for bream or barbel and eating your catch that evening at the lodge. There are hot springs to walk to, canoes to paddle, birdlists longer than your attention span. What Kafue offers is not a single spectacle. It is the reminder that a place this large is almost never finished showing you what it has.