>>43492689>>43494833Yes, that's it, it was made for Events. It would give you access to Mareep, Aipom, Pineco, Shuckle, Teddiursa, Houndour, Stantler and Smeargle. Then they added those pokemon to Emerald, so the cave wasn't needed.
https://bulbapedia.bulbagarden.net/wiki/Altering_Cave>>43494276After exiting cinnabar island gym Bill arrives to carry you to Sevii Islands, I think you can tell him that you don't want to go. If I were you, I would go because you can earn XP by fighting trainers. Initially you can only access the first 3 islands.
