Bluffs or Mountains in Photoshop
I had 6 minutes so I figured I would make a quick video on how I approached making bluffs (can be used for mountains too)
The tutorial can be found here:
Here is an example map to give you an idea:
There is also a tutorial in that first link that shows how you can easily make steps and platforms by using shadow effects.
There is no sound in these videos - sorry guys. I usually make them at work during lunch.
If you have any questions, please ask. I am a hack at Photoshop so I may be going about things the hard way ;)