Hi welcome to the board, are you there to early? i know you can get there before you are supposed to. i go there to build up experience because at that point those enemies will give the most and i know where you are talking about the boss will not show. make sure you go back to Tigray Mines and do the other section. go towards the area where you fought Dularn there is a door over there that will take you to a different section (Haunted Road i think it was called in the Turbo Duo version) where you fight the crystal boss.