Ok I cleared all the wizzard tower's the shock towers... etc then i killed Rayhun and that other general, Now im not to sure what to do

Im near the mine entrance right now, also thats where the last anti-dragon zone is i cant figure out how to shut it down, theres a teleporting pedestal there but when i stand on it it dosent do anything, is there a switch i need to hit or maybe its glitchd?
Ok i got in the mine