almost down the hatch part two

okay, after watching jack traverse the hatchy hole, iv'e come to the conclusion that this is all one place, one time, the only thing somewhat unexplained is the grime on desmonds hand. i have plenty to write about, but i got stuck making this map out.
not nearly to scale, probably hardly accurate, extremely simplified, but i was compelled.
more writings later, i promise.



oh, and one quick theory i'll throw out there.
when he types the numbers and hits execute, is it possible that that is what causes the backwards wet walt appearance topside? all we know is that they're all still waiting at the caves for jack n co to get back from the hatch, so the timeline could fit.