Well, the way i see it, Big Whoop was a portal to hell, and given how firey everything looked in chapter five in the real world just under the portal to the crossroads, i think Big whoop is a portal to the crossroads, which is in turn, a portal to the afterlife. Still with me? That means that part of TMI was actually in/under monkey Island.
"The universe has to move forward. Pain and loss, they define us as much as happiness or love. Whether it's a world, or a relationship...everything has its time. And everything ends."-Elizabeth Sladen: RIP.