This snap in question: lem.to/p/Ccvz appears to contain only one person, but the sidebar shows a lot more. It'll be impossible for all of the people to be in the location anyway, since Hell Bar is instanced, which is what makes it rather weird.
I don't know if there are any others - I only found this one while browsing through the list of snaps on which I appear at: www.glitch.com/profiles/PUV...