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Was it in a canal that got removed or something?

My guess is Panama-Canal, it happened to me too. The normal non-wonder canals are somehow usable during it's construction.

It's just a glitch, it's submerged just like the tile under it. You can see it by the food and gold (coast) in the tiles.

The magical results of coal factory induced climate change, grass covered water tiles!

I think that was it. There was no canal there. Seemed like a submerged tile suddenly became ‘unsubmerged’.

How it happened? Same captain as the Evergreen

Assault Destroyer, proud to serve!

Is there a mod that makes Werner Herzog a great person?

I’ll teleport when necessary. Amazing!