Say, one would be able to dig a big hole, right through the earth. Line it with adamantium to keep it from breaking and to keep anyone entering save from whatever is trown at them. (Imagine it would be possible)
Now, i would jump in...
be tossed out of the other side and never to be seen again (which would really annoy me)
bounce back and forth around the place where the center of the earth should be and in some time I will just stay in the center.
I would go through, past the center and a little further, but stay there somewhere...
destroy the earth because If pressure differences (Creating a big storm or something)
anyone? This question has been haunting me since I was very young...:)