Where is Regigigas in Alpha Sapphire?

Question

I caught the Regi trio before but I couldn't find regigigas. please help me

Answer 1

To catch Regigigas, follow the following steps:

• Obtain the National Pokedex.
• Capture all three of the Regi trio. You need to nickname Regice something, and let it hold an ice related item (Snowball, Casteliacone, NeverMeltIce, Icy Rock)
• Head to the cave in which you found Regice in (Route 105), and walk to the center of the room. Regigigas will challenge you.

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