Marshopolis

Location
Marshopolis is a hidden "world" within Dublin, It has a 5cm tall tunnel that goes into the bottom of a building, at the other side of the tunnel there is a forest. That tunnel leads you through some kind of alternate dimension, as the earth is not visible to them, and Marshopolis cannot be reached by humans either. This information itself is vague, as no-one really know what and how the earth and Marshopolis is connected.

People
Marshopolians is the name of the Marshmallow s (and other) living in Marshopolis. It is like the name earthling and what we are humans (and possibly other).

Title
The name Marshopolis was derived from the word Marshmallow and the combined form of metropolis meaning city in Greek.

It is also the title of the comic series "Marshopolis".