First up, the hills were completed.
Next, Mars base gets a couple more bunkers. These were made from wooden boxes and bits that I had. The doors were made from a hirst-art sci-fi mold. Radar dish is Monsterpocolypse I think.
Finally, I made a bit more progress on the Bio-dome. Still more detail to add. Overall, this is my least favorite piece. Maybe more detail will improve its look.