So i was experimenting with the twilight forest mod. I went in and spawned in a hollow hill that i haven't progressed to (i couldn't break blocks, acid rain kept hitting me causing 0 damage[very annoying]) I eventually brought TNT and blew up the portal hoping to destroy it(to then get a new portal in an above ground area that i could break blocks in). I would then kill myself and spawn in overworld and make a new portal. I blew up the TNT and died, but then spawned in the hollow hill and now have no way of getting out, or to the overworld? Please help soon, i have put many, many hours into this world and i do not want to lose it!