Valve has unveiled the first concept art for Half-Life 2: Episode 3 as part of the Into the Pixel exhibit for the E for All Expo.
The concept piece depicts a small silhouetted figure brandishing a crowbar set against the backdrop of what appears to be the landscape out of the ruins of the Citadel.
A floating Combine Advisor towers over what we obviously presume to be Gordon. Considering there's no where to run or hide, this could represent the climax of the game, with Gordon facing off the Combine Empire.
The Into the Pixel exhibit features sixteen works of video game art chosen from a field of submissions from various artists around the world. It will take place between October 3-5, 2008. Valve has recently confirmed that Episode 3 will not be appearing at E3, so maybe there's a possibility of seeing the game there...?