How do get regigigas in diamond?

regigigas is found at the snowpoint temple in snowpoint city. snowpoint temple is north of the city.you can only get in once you have beaten the elite four also you need regirock regice and registeel to awaken him, have all three in your party. avigate your way to the very bottom floor. the puzzle is like the one in the snowpoint city gym. when you finish the puzzle regigigas will be standing there. interact with it and it should awaken and battle you ! warning LV 70 use fighting Pokemon and lots of ultra balls or dusk balls or even better a masterball