I like the choice to overexpose the sky to properly expose the terrain. However, the shadows still look too dark on one of my monitors (I have each monitor calibrated differently) and also on my phone. It looks like the contrast has been boosted and there appear to be some hard clips in the highlights, which aren't very photographic IMO. Is this postwork? If so, what do they look like without it? Soft clip in Terragen should avoid such harsh clips on the highlights even when something is overexposed.