The Giant Chasm is a large impact crater, assuming it was created by a meteorite. It has a large forest and in game, it works as a maze. Many Pokémon can be caught in this area, mostly Pokémon from previous generations. It is believed that who ever enters this area, disaster will fall upon them, which could be a reason why Absol can be caught here. Since Absol appears to warn about a disaster.
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