I visited the infamous 0B map in Pokemon Yellow, using the Gameshark code 010B5DD3, along with the walk through walls code.
I used TheZZAZZGlitch's DEBUGYellow rom, because of the anti-crasher tool that he has implemented. With that enabled, all that I did was to open the items menu, enable the code, then check the Town Map and exit the menu.
Most of the times, it looks like Pallet Town, same color palette, same music, but with the NPCs having glitchy text boxes. The footage in the video was the one lucky time that it showed its "true face", looking like Glitch City, but with Pallet Town's music.
So, with this, I'm pretty confident now that map 0B is just a beta version of Pallet Town.
Here's the video of me visiting the town.https://www.youtube.com/watch?v=JuDcVj1YoRQ
I'd really love to hear your thoughts on this too. Thank you.