The plains are hilly.  Not very hilly, nothing compared to the mountains in the distance, but sloped enough that now and then Bella crests a hill and sees... more road and more grass, mostly.

Oh, wait!  Is that the sound of faint yelling?  Maybe the distant clash of swords?  It's coming from further down the direction of the road, maybe from behind the next set of hills, or the hills after that.

The plains are hilly.  Not very hilly, nothing compared to the mountains in the distance, but sloped enough that now and then Bella crests a hill and sees... more road and more grass, mostly.

Oh, wait!  Is that the sound of faint yelling?  Maybe the distant clash of swords?  It's coming from further down the road, maybe from behind the next set of hills, or the hills after that.