Aswan: where the Nile becomes African

Eratosthenes never needed to leave Alexandria to calculate the circumference of the Earth, but he needed Aswan. He knew that in this city — ancient Syene — the sun illuminated the bottom of vertical wells on the summer solstice: no shadow at all. That meant the sun was exactly at the zenith. In Alexandria, on that same day, the gnomons cast a shadow of 7.2 degrees. The geometry did the rest. Aswan was the fixed point that allowed the most brilliant astronomer of the ancient world to calculate the size of the planet with a precision that would not be substantially improved until the nineteenth century.

The edge of pharaonic Egypt

Ancient Syene was the southernmost point of pharaonic Egypt for most of its history. Beyond it began Nubia, a territory the Egyptians called Ta-Seti (“the land of the bow”), simultaneously a dangerous frontier and a source of wealth: gold, ivory, ebony and slaves all passed through these routes. The first cataract — a series of rapids and outcrops of pink granite that make the Nile unnavigable — physically marked the boundary. It was not merely a military frontier: it was the point where the geography changed its nature.

Aswan granite is one of the most pervasive materials in ancient Egyptian art. The obelisks that stand today in the squares of Rome, Paris, London and New York were cut here, in the quarries east of the city. In those quarries lies the Unfinished Obelisk, still in place: 42 metres long, 1,200 tonnes, abandoned where it lay when a crack was discovered in the rock during carving. It is the largest object the Egyptians ever attempted to move, and the clearest evidence of the scale of their ambitions.

Elephantine Island

In the middle of the Nile, directly opposite the city, Elephantine Island concentrates almost three millennia of history into an area of a few square kilometres. The Ptolemaic temples retain paintings that the afternoon light tints a soft ochre. The Nilometer — a scale cut into the rock to measure the river’s level — was one of Egypt’s most important economic instruments for centuries: the level of the annual flood determined taxation, because it predicted the harvest. The islands and channels between them form one of the most tranquil landscapes on the Nile, especially at sunset, when the pink granite catches the light as if it were burning from within.

Feluccas — the lateen-rigged sailing boats that have been navigating the Nile for three thousand years — are easier to rent in Aswan, and cheaper, than at any other point on the river. An afternoon on a felucca among the islands south of the city, with the north wind blowing in exactly the same direction it blew in pharaonic times, offers a quality of silence that the organised Nile cruise circuit rarely provides.

The High Dam and Lake Nasser

The Aswan High Dam, built between 1960 and 1970 with Soviet funding and technical assistance after the Western withdrawal following the Suez affair, is one of the most significant civil engineering works of the twentieth century. It stands 111 metres high, stretches 3.8 kilometres across, and created Lake Nasser, the largest artificial reservoir in the world: 550 kilometres long, 5,250 square kilometres in surface area.

The dam’s balance sheet is contradictory. It saved Egypt from the catastrophic floods and devastating droughts that had struck the country unpredictably for centuries. It guaranteed electricity and irrigation water across the nation. It allowed up to three annual harvests in areas that had previously depended on the Nile’s cycle. But it also flooded most of historical Nubia, forcibly displaced approximately 100,000 Nubians from their ancestral villages, interrupted the flow of fertile sediments that had nourished Egypt’s fields for millennia, and submerged forever archaeological sites of incalculable value.

The temples that were saved

The international monument rescue campaign organised by UNESCO in the 1960s was one of the most ambitious heritage preservation exercises in history. Twenty-one temples were dismantled stone by stone and relocated to higher ground before the waters rose. The temples of Philae — a Ptolemaic complex dedicated to Isis, on an island that became partially submerged — were moved to the island of Agilkia a few kilometres away, their original layout recreated with a precision that still astonishes.

Philae at sunset, when the last cruise groups have left and the place is nearly empty, has something unreal about it: perfect columns reflected in the water of the artificial lake, beneath the shadow of the Nubian desert. It is one of Egypt’s most silent and most weighted moments.

The light of Aswan

There is something in Aswan’s light that Cairo and Luxor do not have. Further south, with the Nubian desert on both sides of the river, the light is harder and warmer, with an intense yellow quality that makes the pink granite glow with unusual brightness. Photographers who know Egypt well often say their best shots of the trip come from here, not from Giza.

Nile cruises depart mostly from Aswan and sail to Luxor over four or five days. For independent travellers, the train between Aswan and Luxor takes three and a half hours and offers some of the best views of the upper Nile from land.

The complete Far Guides Egypt guide includes detailed Nile Valley routes, interactive maps and all the practical information you need to plan your independent trip.