In the third mission "Lost Little UFO's" there is a mothership for the UFO's that appears right in that spot.
Nothing is in the mystery zone, just a huge, empty void of darkness.
In Pokemon the Mystery Zone is a location outside of the boundaries of the game world. This is normally inaccessible and can only be reach by cheating or exploiting a flaw in the game engine. Getting out of the Mystery Zone is harder than getting in as the menu is normally disabled here. The easiest way out of the Mystery Zone is turning off the game without saving and loading your save-file from when you were outside of the Mystery Zone.
the mystery zone is when u use an action replay and make ur character walk through walls
You need the cheat 'Walk Trough Everything' then if you walk further out of the real place you get in the Mystery Zone
no you can't catch Pokemon in the mystery zone you can only catch Pokemon if you use action replay or r4 or whatever
gold teeth in Pokemon fireredsafari zone in that last area with the mystery house. as soon as you enter it go downyou have to start overdeep in the safari zone
Mystery Zone
Well, to put it short... You don't. :/
u can with cheats
its only really named a mystery zone because your not suppose to be there
yes there is it is in the resort area near the battle zone