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Frosty Forest
After trekking it out through the frozen snows of the north, you will come across an Absol in the middle of nowhere. The Absol will prance away and you will come across a save point as the 2 of you continue on.
After you finish with your storage/save point then you can head north and have the choice of either Frosty Forest or Snow Path. Snow Path is another 4 Floor dungeon that is just a side path to level up and gather some items if you did none of this before your quick departure from town.
Frosty Forest
The Frosty Forest consists of 9 floors.
Wild Pokémon
Frosty Grotto
Frosty Grotto consists of 5 floors with Articuno waiting on the 5th.
Wild Pokémon
Articuno cannot be recruited until after the end credits
Fighting Articuno