Maps - Pokémon Vortex Wiki

Nightshade - Pokémon Vortex Wiki

Map 18 - Pokémon Vortex Wiki

Bulbasaur, Pokemon Vortex Wiki

Absol, Pokémon Vortex Wiki

Map 3 - Pokémon Vortex Wiki

I just realized something. the in game map of Paldea doesn't show the vortex, so it probably formed recently. Since the Ultimate Weapon was shot several millenia ago, it can't be because

Pokédex - Pokémon Vortex Wiki

Route 13 - Pokémon Vortex Wiki

Pokémon Vortex Wiki

Map 26 - Pokémon Vortex Wiki

Tympole, Pokémon Vortex Wiki

Rotom (Pokedex) Event - Pokémon Vortex Wiki