Would a Filter Help?

This pic was taken at late sunset, and as you can see I have "blown" the sky.
Could this pic be improved with the use of a filter? if so what type?
The colours are very accurate as to what was, the tops of the "hills" are that bright at sunset with the rest of the scene in shadow.
D2x, Tokina 12-24

Could this pic be improved with the use of a filter? if so what type?
The colours are very accurate as to what was, the tops of the "hills" are that bright at sunset with the rest of the scene in shadow.
D2x, Tokina 12-24
