Chobe National Park

Listen first. Before you see anything, there is a sound over the water: a high, ringing call, thrown back and forth across the river. That is the African fish eagle, and on the Chobe it can feel like the voice of the place itself. The air smells of wet reeds and warm dust. Somewhere close, a hippo lets out a deep grunting laugh. Then the light shifts on the river, and a grey shape moves out of the trees. Welcome to Chobe National Park.

You are in the far north of Botswana, where the country meets its neighbours along a line of water. The river in front of you is the Chobe. On the far bank lies Namibia, in the narrow strip of land once called the Caprivi. Not far downstream, four countries come close to touching: Botswana, Namibia, Zambia and Zimbabwe. Few places in Africa sit so close to so many borders. The animals here pay no attention to any of them.

Chobe became Botswana's first national park in 1967, just a year after the country gained independence. That timing matters. A young nation, with few roads and little money, chose to set aside a vast piece of land for wildlife. Today the park covers roughly 11,700 square kilometres. Most visitors see only a small slice of it — the strip along the river near the town of Kasane, which serves as the gateway to the park.

The park is not one landscape but several. Along the river lies the Chobe Riverfront, with floodplains, papyrus and thick riverine forest. To the southwest lies Savuti, a dry, open country of grassland and rocky hills. Further west lie the Linyanti marshes, quiet and remote. In the interior, around Nogatsaa, the land turns to woodland and seasonal pans — shallow hollows that fill with rainwater. Each area feels like a different park, and each changes with the seasons.

Now to the animal most people come to see. Chobe holds one of the largest concentrations of elephants anywhere in Africa. Estimates run into the tens of thousands, and the numbers shift as herds move across borders. In the dry months, when water disappears from the interior, elephants walk to the river in long lines. You may watch a family group cross the water, the adults half submerged, the young ones held close between them.

Here is a detail many visitors miss. Look closely at the tusks. Many elephants in this region carry fairly short, slender tusks for their size. Researchers have discussed several possible reasons, from local genetics to the minerals in the Kalahari soil. Whatever the cause, the bodies are large and the ivory is modest. It is a small reminder that even a familiar animal can look a little different from one place to the next.

Watch the ground near the river and the trees along its edge. Much of the bush here has been pushed over, stripped of bark, or snapped at shoulder height. That is elephant work. A herd this size changes the land it lives on, opening up woodland and trampling paths down to the water. Some people see damage. Others see a landscape being shaped, the way it has been shaped for a very long time.

The floodplains hold other animals you will not easily see elsewhere in Botswana. Keep an eye out for the puku, a russet-coloured antelope that grazes near the water's edge. In this country it is found mainly along the Chobe. The Chobe bushbuck, with pale stripes and spots on a chestnut coat, moves quietly through the riverine thickets. Buffalo gather in dark herds on the grass, and the oxbird — the red-billed oxpecker — often rides on their backs.

Out in the middle of the river, you may notice a low, grassy island. It is known in Botswana as Sedudu and in Namibia as Kasikili. For years the two countries disputed which side of the border it lay on. In 1999 the International Court of Justice in The Hague ruled in Botswana's favour. Today you may see a flag flying there, while elephants and buffalo graze around it, unconcerned with the verdict.

Savuti, far to the southwest, has its own strange story. A channel of water called the Savuti Channel has a habit of flowing for years and then drying up for decades, apparently without a simple pattern. Geologists have linked this to small movements in the earth beneath the region. When the channel runs dry, the marsh turns to grassland. When the water returns, the whole landscape changes. Savuti has also become known for its lions, which in some years have been filmed hunting young elephants.

The river is the best way to see the park up close. A boat moves quietly, and animals on the bank often treat it with little concern. From the water you are at eye level with drinking elephants and basking crocodiles. Hippos rise and sink in the shallows, showing only their ears and nostrils. Late in the afternoon, the light turns gold and then copper, and the reflections on the water double everything you see.

Birds fill every layer of this place. Kingfishers hover and drop like stones into the shallows. African jacanas — small brown birds with very long toes — walk across floating lily pads as if they were solid ground. Herons stand motionless at the water's edge. In the right season, bright carmine bee-eaters nest in the riverbanks. Even if you came only for elephants, spend a few minutes watching the birds. They are part of how the river works.

The river cycle shapes everything. Rain falls mostly in the warmer months, and the interior pans fill. Animals spread out across the park, and sightings along the river grow fewer. In the long dry season, the pans empty, the grass turns pale gold, and wildlife pushes toward the permanent water. That is when the riverfront becomes most crowded with animals. The same stretch of bank can feel empty one month and full the next.

Before you leave, pause for a moment. Listen again for the fish eagle. Watch the surface of the river, and the slow movement of a herd along the far bank. Notice the dust on your shoes, the sand of the Kalahari carried all the way to this water. Whatever you saw today, the animals here will carry on after the vehicles and boats have gone — walking to the river at dusk, as they did before there was a park at all.