Robomow can mow over flat-paved stones that are more or less the same height as the lawn grass; however, Robomow will not be able to drive over stones that are at levels much higher than the grass.
Robomow can work in cases such as the ones illustrated below:
![Good Narrow Pass between Zones](/media/narrow-pass-good.png)
But not in cases such as the ones illustrated below:
![Bad Narrow Pass between Zones](/media/narrow-pass-bad.png)