This simulation has the same process parameters as the previous one, but with a different initial cratered surface.  Note that towards the end of the simulation long, sinuous, dissected scarps wander from north to south across the simulation domain.  The development of these scarps is due to the tendency for fluvial erosion to steepen regional slopes because of greater erosion at the base than the top of the slope.  These scarps tend to integrate laterally but not migrate very far.  Most sections of the scarps are parts of eroded crater walls.  Erosion creates larger and larger basins at the expense of smaller by divide breaching.  Nonetheless, independent basins at different elevations persist throughout the simulation.

In this and the previous simulation, no additional cratering occurs during the simulation.