Okay, bear with me. Think of it like this: My character is stuck in an situation whereby every time he sleeps, he wakes up at a different time (as in the past/future, not 8:00am), in a different environment.
He may close his eyes and open them in a future where human civilisation is no more, then sleep once more and open his eyes when dinosaurs are roaming the earth.
I don't immediately want to give away where he is or what time to the reader, because I want the reader to feel as lost as the character, but I do want my writing to reflect from the offset that he's now in a different place.
How can I do that without giving away crucial points about the environment itself?
Is this something I could to subtly through adjusting my pacing/writing style in addition to differently structured/worded descriptions?