I heard about the "thin places" on the radio and then I read about such places on the Internet.
“There is a Celtic saying that heaven and earth are only three feet apart, but in the thin places that distance is even smaller. A thin place is where the veil that separates heaven and earth is lifted.”
Interesting! However, I don't think that a thin place is a geographical place. I think it is a short sequence of your life. You get a glimpse of something. You can not spend the rest of your life there. You have to continue your journey. You have to live your life here, on this side.