This dream was awesome!
I was about to move to another city with a friend of mine for college, but we couldn't due to a gap on the floor. We descended down there with ropes and found some sort of electromagnetism energy focus (those who have seen Lost will know about it) which was causing time traveling and time paradoxes. We tried with no success to get out of that loop. People started to die and we tried a different thing. We went there again with a nuclear bomb, afraid of it exploding with us inside that 'cave'. I started pushing it towards the center of the mass and it exploded. I wake up.