How do you find the fighting dojo in Pokemon crystal?

The fighting dojo is next to Sabrina's gym in Saffron. it's the one closest to the left, and is considerably smaller than the real gym.

he is there but then he wont be there he is in the maze where you go to mahagoney town you need at least one spot left because when you defeat him he will give you a tyroue as a reward. By Deebancool