There’s not a whole lot of concept art for this one ... And here we can see a bit of that intention at play with Combine ships flying off into the distance on this desolate planet.

The Combine, who set up base around it ... Additionally, McGreavy released scans of other concept art for Half-Life 2: Episode 3 that include post-apocalyptic vistas and a coastline covered ...

The first widely available piece of concept art for the final episode of ... Freeman within a large Citadel-like environment, a Combine Advisor looming ominously overhead. IntoThePixel's website ...