They remember the presence of the mountains. I live in Denver, on the Front Range of the Rocky Mountains, and the mountains have ingrained themselves into my psych like some kind of invisible shadow. I can always orient myself to that sensation, as if the air has more pressure that way. I can do it indoors, and (mostly, barring weird circumstances) in the night. And, I recently learned, I can do it on the other side of the world. I think I need to have a contiguous series of reference points to keep my subconscious straight. If I do, then I can go to the countryside in India and still feel this looming presence in the empty air that’s my memory of the Rocky Mountains.