Cruise near to the end and you will find a brown wall and a switch to your right when you close in on the exit. if you look closely, you will see a Porygon rustling in chameleon form in the wall. Hit him with a pester ball and you can unlock the Cave.
10/25/2001
Different credits
Here's how to see different credits then the ones when you photograph Mew! All you have to do is finish your Pokemon Report, then Prof. Oak will congratulate you. Voila! Different credits you'll only see once!
7/11/2005
High Scores
The High Scores are a set amount of points for each of the seven stages in the game. Nothing is unlocked for beating the high scores, but it is fun nonetheless to do so.