So in many games you have regions that are bordered on all sides by impassible geography of some sort or another. This has always bothered me as necessary but also acts as a reminder to pull you out of the fantasy.
I am looking for some real world examples of geography that could fit the bill and be used as a model.
- Area should be 10 miles by 10 miles, though shape is irrelevant, just need the space.
- The area should have no more than 2 or 3 access points. These access points should be usable by the average medieval person. Obviously a small group of trained individuals can access from virtually any direction, those don't matter
- Biome type is not particularly relevant, though my preference is that it include forest.