Why is there a lake in Africa near Congo/Gabon istead of one near Uganda?

Also, can this be done with png? Most consecutive lines are very similar, so I'd expect the algebraic pass to be very useful.

> Why is there a lake in Africa near Congo/Gabon istead of one near Uganda?

Africa and Europe are connected through Spain.

There's no Suez channel.

There are plenty of approximation: it's the whole point of the thing... You only get 1013 bytes (or, well, 500 bytes in the question asked).