When a man sleeps for years, there could be many possibilities. Maybe his loved ones have moved on, or the society has advanced in ways he never imagined. Or perhaps he finds himself with special abilities due to the long sleep.
Maybe your uncle discovers some hidden treasure or a mysterious creature in the ice cave. It could lead to all sorts of exciting and unexpected events.
Well, in such a story, the man could experience extreme panic and psychological trauma. He might also encounter unexpected help or face various obstacles while trying to escape.
He might wake up in a completely different world. Maybe technology has advanced beyond his imagination, or society has changed in ways he never expected.