I kind of like the darker terrain and general lighting as-is. In fact I think in the real world if you exposed for the sky during a sunrise you might get a similar effect since most of the landscape is still in heavy shadow and the sky is probably darker than normal daylight, thus providing less indirect light to the landscape. Granted the sky looks bright in this case and one might expect more indirect light than is apparent, but in photography this could easily be the result of simply underexposing the landscape in order to properly capture the sky.
Anyway the end result is pretty nice IMO. Very peaceful, simple scene.
- Oshyan