Cinnabar island.
Ok, so you're probably tired of hearing the Missingno. cheat, but I'm just gonna tell you, if you surf up and down on that land/water part, carry strong pokemon! Not because of Missingno.
You could make missingno faint by one hit usually, but you could find pokemon Lv. 100 and up.
Sometimes you can't run, and also on that part of land/water whatever it is I ran into trainers, ones with strong pokemon to!
I've also ran into my rival more than once too!
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