You need 2 defeat da Snowpoint Gym leader.
snowpoint temple
It's the little square area next to Snowpoint City and you need to beat the Elite Four to get there
You have to travel through mt.coronet to get too snowpoint city.
Until you bring all three Regis (Regice, Regirock, and Registeel) into Snowpoint Temple, the Pokemon on the bottom floor will be a statue. Once you have all three, it will awaken and you can fight it. It's a Regigigas at Level 1.
Through Mt. Coronet
in the snowpoint temple
In her gym in Snowpoint City.
by snowpoint city.
you have to have the national Pokedex
The Gym Leader of the Snowpoint Gym.
snowpoint city
Near Snowpoint City