Black holes are the signature of subatomic extra dimensions, not parallel ones. Plus remember that these extra dimensions are ones from which electromagnetism and the strong and weak nuclear forces are excluded. So there is no possibility of making atoms there.
Everyone is always told that you have to love your significant other warts and all. But what if he or she or it could journey to a parallel universe where none of their positive attributes would be marred by human foibles.
What if I told you that everywhere you point--be it the tip of your pen, or the outermost tip of Cape Horn--there is a hidden, 6-dimensional space so small that we cannot see it nor ever set foot in it?