What about a bit of map study... excellent 1:50 000 maps are available for pretty much everywhere.
I was trained BGPS (before GPS) to draw a line and then apply terrain clearence in an expanding cone from origin to dest. It was pretty time consuming but your safe altitudes/levels were your responsibility - thats why you got wings..
It might not satisfy FAA, JAA, et al but will keep you out of the rocks and is far better than blasting off into the "unknown"