I think someone in the comments said it before, the only thing that seems wrong with this terrain is its size. It would be nice to see a extended version of this terrain, with more hills and valleys.

The terrain already has pretty steep hills on its W, E and N side, so that might be extended further. Some sides of that hills could be that steep that you cannot climb it on most places. Some of these sides might for that reason have artificial small walkable ways to the top, carved out by men.

Some might be too steep to walk up most times, but climbable at some places because for example of landslides or old dried up riverbeds etc.

Others might plateau halfway and then move slowly up to another hill, before that one leads to another valley, with another hill not too far away on the other side, which could create a pretty small and claustrophobic valley.

So you could for example have the choice to either take the way through the valleys with more space to manover but much longer ways, or climbing the steep hills with only a few ways upwards to reduce the distance to destination but a higher chance getting cought.