I can only get to f1-2 of Mt. Mortar and I can't go on the sea to surf or to use waterfall.Please help me, thank you.
For information on what f1-2 is here is a link:http://www.serebii.net/pokearth/johto/mt.mortar.shtml
If you mean get to tyrogue, this will help:
You need to go to the mahogany entrance and go north using surf.
Then, conquer the maze in floor 2.
Then, follow the stairs to the left.
If you beat karate king, he will give you a tyrogue - lv.10