Here's a standard Immortal Pangaea map in which I settled in place. And then I discovered a nice spot 4 turns away. Assuming you didn't settle at turn 0 and took your warrior down along the river, would you have settled where the Warrior is now - a desert hill, river, coastal spot? I realize my second city could be settled there but this is too close to the capital, imo, and would provide too much overlap to really grow either cities. Would this spot be worth settling at turn 4?