i've been mapping the locations of more than 10 oasises of the internal universe, i found that if you go to the location of an oasis directly from ganton gym(without falling into the abyss), there are yellow markers which you can use to teleport into the oasis(which makes it easier than finding a way in, but most aren't a problem unless eat paint chips, j/k). still, i believe that there are more oasises, and i think i can find liberty city. another thing is that the abyss has things around it too(i found a crane out in the middle of the ocean to the east, i also was blowing visable doors off invisable houses with c4 and almost got stuck in one of the houses). if you have any info about the internal universe, post it up. if you have any questions, post those too. p.s. if you get too close to the SFPD oasis, you will land and won't be able fly off. and you will go to hell if you go into the yellow marker in front of it, you will be stuck in the SFPD with 2 or more stars.