you could do as dave suggested.....or try 'add divisions' is another method. Maya is not designed for topo creation.....it is very poor for this kind of thing. Sculpt geo is about as good as it gets UNLESS you use a height map generated plane. This also is limited but does work WHEN Maya decides to let it work.

This is one method but I couldnt get the damn thing to work properly

https://www.creativecrash.com/tutoria...placement#tabs

This is another which did work

Maya Terrain Displacement Map Tutorial by Stuart Christensen - YouTube

If you can get either to work..cool.

You could take your landscape into PS and generate a height map out of that and play with the displacement values...I think stwert or paldav had a thread in here somewhere?? might have been paldav and his Star Wars terrain.

cheers bullet