He's not in a cave, but he is building it out of scraps. It's "Improvised" in the sense of "Improvised Explosive Device." Tony Stark is well known in Marvel Comics for his high-tech Iron Man suits ...

Tony Stark. Genius, billionaire ... He uses the primitive device to escape from the cave in Iraq. Once back home, he then begins work on perfecting the Iron Man suit. But the man who was put ...