Écrit, et sourcé.

The royal cemeteries of the Kingdom of Kush — at Meroë, el-Kurru, Nuri and Jebel Barkal — hold the remains of well over two hundred royal pyramids, more than survive in the rest of the world combined. They are steeper and more slender than their northern cousins, built of sandstone blocks over the tombs of kings, queens and crown princes from roughly the 8th century BC to the 4th century AD.

Meroë itself became the royal capital around 590 BC and flourished on iron-smelting, gold and the caravan trade. Its ruling line included the kandakes — sovereign queens like Amanirenas and Amanitore — whose pyramids stand beside the kings' with equal honour. The site was inscribed on the UNESCO World Heritage list in 2011 as the "Island of Meroe."

What astonishes visitors most is not the count. It is the solitude: on an ordinary morning the dunes between the chapels are empty, and the only sound is wind on sand.

Jebel Barkal rises about 100 metres from the plain near the Nile's fourth cataract. From the New Kingdom onward it was identified as a residence of Amun; a freestanding pinnacle on its cliff was read as a rearing uraeus cobra. Temples accumulated at its base for more than a thousand years — the Great Temple of Amun among them — and the city of Napata beside it became the coronation seat of the Kushite kings, including the 25th Dynasty that ruled the whole Nile valley.

Jebel Barkal and the wider Napatan region — Kurru, Nuri, Sanam, Zuma — were inscribed by UNESCO in 2003. Climb it at sunset and the geometry explains itself: the pyramids below, the river's bend, the mountain's shadow reaching across all of it.

The Kingdom of Kerma emerged around 2500 BC as one of Africa's earliest urban civilisations. At its heart stood the Western Deffufa, a solid mud-brick religious monument whose remains still rise about eighteen metres — among the largest ancient structures of its material anywhere. Around it: workshops for bronze and faience, granaries, audience halls, and cemeteries of great tumuli.

Decades of excavation by the Swiss archaeological mission under Charles Bonnet revealed the city's plan and, nearby at Dukki Gel, a cache of seven monumental statues of Kushite pharaohs — now shown in the Kerma site museum. Kerma traded gold, ivory and cattle up and down the river, and at its height rivalled its northern neighbour outright.

Sanganeb — a coral atoll crowned by a British-era lighthouse — and Dungonab Bay with Mukkawar Island were inscribed together by UNESCO in 2016 as Sudan's marine World Heritage property. The citation notes seabird colonies, marine mammals, sharks, turtles and manta rays, and one of the world's most significant remaining populations of dugong.

Divers come for the walls: visibility that regularly reaches forty metres, schooling scalloped hammerheads in season, and the wreck of the Umbria at the harbour's mouth. What they remember is the emptiness — whole reef systems, and one boat.