Sahara

[Ludens]

Terhazza cannot be reached without cheating. This was done on purpose to prevent the Ptolemic/Carthaginian sand wars. IIRC the script also requires one town that stays in the hands of the eleutheroi.

[gran_guitarra]

Is that something hard-coded into the game? Or did you guys add that for some reason?

[Foot]

Is that something hard-coded into the game? Or did you guys add that for some reason?

Lots of buildings that we use for scripting purposes are placed there. Going there is highly unadvised.

Foot

[MarcusAureliusAntoninus]

You cannot reach that settlement.
This is in the FAQ!

[Swordmaster]

Perhaps you should paint "hic sunt dracones" in the sand of the campaign map or something like that to discourage its conquest.