"Is that the mystery hole?"
"No that's a regular hole"
"Is it that one?"
"That's a window"
"Well then, where's the mystery hole?"
"That's the mystery"
"Oooooooohhh.... I want a refund"
I literally entered that specific mystery hole as an adolescent and emerged several minutes later as a slightly older adolescent. I am saddened that others are no longer able to be similarly enriched.