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I used to have an autistic friend who was obsessed with these things. I knew they were useless but he was convinced they had some kind of secret.
They're still useless but at least they have cool lore around them. I hope there's something cool in store for them when the inevitable Sinnoh remakes come desu, It'd be an easy thing to just have them rip open ultra wormholes in Solaceon ruins for post game content.