There is a piece of the Sahara that is already below the sea. Egypt's Qattara Depression sinks 133 metres beneath the Mediterranean it never meets. So we introduce them.
The Qattara Depression is a genuine, enormous basin in Egypt's Western Desert — roughly the size of Belgium, and its floor lies as much as 133 metres below sea level. It is one of the lowest points in Africa, and it has been sitting there, empty and dry, waiting for someone with a canal.
Engineers have wanted to flood it for over a century. The idea is beautiful in its laziness: the Mediterranean is right there, ~55 to 80 km away and 133 metres higher. You don't have to lift the water. You have to let go of it.
Cut a channel from the sea to the basin and the Mediterranean pours downhill through turbines — continuous hydroelectric power with no river and no dam reservoir to fill.
Here's the trick that makes it perpetual: the Sahara evaporates water ferociously. Seawater flows in and the sun boils it off almost as fast, so the lake rises to an equilibrium and then stops — inflow forever balanced by evaporation. You can keep running the turbines indefinitely, because the desert keeps making room. The basin becomes a permanent salt lake and a permanent power station at the same time.
133 metres of head, delivered free by geography. The same physics as any hydro dam, except the reservoir is a continent-sized hole and the river is the entire Mediterranean.
Evaporation is the release valve. The lake never overflows because the Sahara drinks it. Inflow = evaporation = equilibrium. The most patient machine on Earth.
Evaporated seawater leaves its salt behind. Over decades: solar salt ponds, mineral harvesting, brine chemistry. The lake pays a second dividend in white.
You still have to move the water from A to B through 55–80 km of desert. There are three ways to make that cut, and history genuinely argued about all three.
The 1970s Bassler plan seriously proposed excavating the canal with ~213 nuclear devices — Cold War "peaceful nuclear explosions." It was real, it was studied, and Egypt said no. We also say no. Fun to know. Never to do.
The modern answer: tunnel-boring machines. Bore a pressurised conduit from the sea to the basin — no fallout, no giant open scar, no treaty violations. Same hole in the ground, minus the mushroom cloud. This is the plan.
Verdict: without nukes. We are an Elon-gated community, so naturally we prefer a boring company to a bombing one. The joke writes itself; the tunnel does not.
Open canal is option three — cheapest on paper, but it's a 80 km trench through shifting sand that wants to fill back in. A bored, lined tunnel is slower to dig and calmer forever after. We optimise for the century, not the quarter.
The Western Desert around Qattara and El Alamein is one of the most heavily mined regions on Earth. Millions of unexploded WWII landmines still sit in the sand, and they still kill and maim civilians and Bedouin communities today, eighty years on.
So step one of this project isn't the tunnel or the turbines. It's demining — slow, dangerous, expensive, unglamorous, and worth doing whether or not a single drop of seawater ever arrives. You cannot build a future on ground that still detonates.
This is the part of the brochure with no punchline. Demining Egypt's Western Desert is a genuine, ongoing humanitarian need. If the ridiculous city is what makes someone care about it, good.
Fill the basin and Egypt gains an inland sea the size of a small country — power, a microclimate, humidity where there was none, and a coastline nobody had yesterday.
This connects straight back to the main project: the new shores get the mangrove and lagoon treatment, the excess excavated sand goes to build habitat, and the shoreline becomes a living edge instead of a dead one. Hydropower on one side of the ledger, blue carbon on the other.
A steady hydro output feeding the Elongated City's foundries — the one form of solar power that keeps running at night, because gravity doesn't clock off.
Thousands of km² of open water in a desert changes local humidity and could seed greenery around its shores. Modest, real, and more than the sand offered before.
Salt-tolerant aquaculture, migratory birds, mangrove-fringed shallows. A brand-new ecosystem accounting, honestly, for the disruption of making it.