Ancient Battlefields

[Cartaphilus]

I have to disagree abour rivers, they snake around a lot. Even hills can shudffle about: I believe certain boundaries around the San Andreas fault move a yard a year or more. However there are definitely stable features you can rely on.

Rivers and shores usually change.

For example, Gades (now Cádiz) was built in an island, but now this island is united to the continent.
All the coast of the Betis' mouth (now Guadalquivir), has changed a lot in two thousand years.