Not quite as exciting as the Episode 3 concept art from last week but nonetheless interesting to see some old art cropping up online, showing the development stages of Half-life 2.

The art below is by Damarcus Holbrook, a 3D Artist / Concept artist who worked at Valve between 2003-2004, creating props and environments seen within Half-life 2 and Raising the Bar art book. Some of it may be familiar to you, for example the gas tanks and igniters found in Ravenholm, or the playground in Point Insertion.

You can find the full album on his portfolio website and check out a selection below, including the progression of the attic which you encounter in the chase scene near the start of Half-life 2.