here is the photo. (face blocked to protect identity)

My grandfather was drafted into the Korean war. Unfortunately I don't know much about him and his time in the war because he died when I was very young and he I guess he never really spoke of it because my dad (his son) doesn't know much about it either. I was wondering if anyone could tell me about where this may be, or even just more about the vehicle he is leaning on. It looks like it says "last step to hell" on the side.

The number "967" is written on the back of the photo. At first I thought whoever wrote it meant "1967" but the Korean war ended way before then.

Any information would be great. Thanks in advanced