The Location of AP Island

[Greytraveller]

Maybe someone has thought througth the idea behind Astral Pulse Island to have arrived at a detailed description of where it is.
Is AP Island -
a) a thought form subjectively created by many individuals that has become an objective location  :question: or
b) a location in the RTZ (Ethereal plane) that can be reached by anyone while out of body in the same manner as someone astral travelling to a physical location (like Stonehenge or the Great Pyramid) :question: or
c) a focus 10 locale  :question: or
d) a focus 20 locale  :question: or
e) a focus 23 locale  :question: or
f) any or all of the above  :question:  :question:
What I specifically want to know is this - does anyone have a 'road map' of directions they can provide to reach AP Island? It appears to me very much like a BST-Belief System Territory. If so then that would be fine. Yet if so would there also be many permanent discarnates (ghosts, spirits) that also visit (and maybe reside) there as well?