The pattern was remarkably consistent: build a village from mud brick, live in it for a generation or two, abandon it when flood or dynastic upheaval made staying impossible, let the desert wind cover it, then build again on top. Six distinct phases of occupation emerged. The oldest, beginning around 30 BCE during the late Meroitic period of the Kushite empire, contained no houses at all -- just three substantial public buildings. One was a walled market compound with shops flanking a plaza. Another turned out to be the best-preserved wine press ever discovered in Nubia. The press was used only briefly before being filled with trash and covered over, probably after a devastating flood. Two centuries later, when Kush itself had collapsed, Meinarti was reoccupied -- this time as a cluster of small peasant dwellings belonging to the impoverished remnant kingdom of Ballana.

Around 650 CE, after Christianity had been introduced to Nubia, the island was resettled once more. Most of the new village was poorly preserved -- repeated flooding had eaten most of the walls down to 40 centimeters. But the foundations of Meinarti's first church emerged clearly: red cobblestone flooring with a white cross pattern at the center. The builders had somehow gotten the orientation wrong. The corners deviated from right angles by more than fifteen degrees. Almost immediately they rebuilt it on a corrected plan. That church became the only structure at Meinarti that persisted across multiple phases of occupation, modified repeatedly as sand accumulated around it, standing while everything around it was rebuilt, abandoned, and rebuilt again.

Phase 4 began around 950, during a period when Christian Nubia enjoyed unusually warm relations with Fatimid Egypt. The archaeological record reflects the prosperity directly. Houses were substantially larger than anything earlier. The typical dwelling had a sizable front room, one or two storerooms behind it, an L-shaped passageway, and at the back of the house -- this is what marks Meinarti as something special -- a latrine with a ceramic toilet fixture. No earlier Nubian site has produced anything comparable. One house, probably belonging to a local official, had whitewashed walls inscribed with protective prayers and a suite of four storerooms. These were the best-preserved buildings on the mound, some with original roofs still intact when excavation began. A century or two later this village too was abandoned, buried, and sealed away.

Around 1200, Meinarti took on strategic importance during a turbulent period that saw Crusader armies reshape the Eastern Mediterranean and Egyptian raids threaten northern Nubia. The Eparch of Nobadia -- the viceroy who governed the northern reaches of the Makurian kingdom from his usual capital at Qasr Ibrim -- began using Meinarti as a secondary residence. What Adams found from this phase was unlike anything earlier: a sprawling complex of more than eighty contiguous rooms, most of them small, built around a core of larger chambers with whitewashed walls and murals in red, yellow, and black. The paintings were abstract in a way the ones in Nubian churches were not. None of the rooms showed signs of daily residence. The entire complex was probably storage space for goods in transit through the cataract, plus chambers where the eparch could stay when he came downstream. In 1365, when a Mamluk invasion loomed, that same eparch ordered the evacuation of all of northern Nubia.

The final occupation, beginning around 1400, left one massive building: a mud-brick castle-house with vaulted chambers, originally two stories tall. The upper floor held living space including toilets; the ground floor was pure storage, with some rooms accessible only through the roof. A Greek inscription on one wall read MICHAEL RAPHAEL GABRIEL, the archangels' names repeating around the chamber, attesting a Christian origin for a type of building that scholars had long assumed was Ottoman. Most castle-houses stood on islands, presumably for defense. Around 1500, Christian Nubian civilization ended. The building stayed in use into the Ottoman period. Around 1890 the Anglo-Egyptian garrison at Wadi Halfa cleared off the upper floor and installed a gun emplacement. That layer became Level 1 in Adams' system -- the top of the mound, the last thing built before the water came. The island, the mound, and eighteen centuries of stratified human presence now lie beneath Lake Nubia, preserved in detail only by the race that Adams and his team ran against the rising reservoir.