But that's my best guess! The real area had better be even more similar than North Wales is. :P
To be honest, I'm not that fussed about the prize (naming a recurring character). Yours is a nice game, certainly, but I just answered because it was a puzzle. If you will insist I customise this NPC, I'm going to have to insist he uses the phrase: "It's time to battle Pokémon and chew bubblegum! ...But I'm all out of gum."