it is in the underground at counterfeit
There is no safe on Counterfeit Island. There is an underground hatch that has a Dragon Face lock on it.
When you enter the museum at night through the underground hatch, you can hide behind them to avoid the security system's red laser beams.
you have to take the underground tour
get all the ripped papers
Once you have taken the Underground Tour, you can apply for the job at the museum. When you leave (that night), you re-enter the museum through the secret hatch into the Supply Room, which opens from the Underground. (see related question)
go in the underground tour
It is in the middle, where the lightbulb hangs from the ceiling.
you avoid all of the guards
You see it as the board ladder near the end of the Underground Tour. It is a locked hatch up into the museum's supply room. To open it at night, solve the dragon face puzzle. (see related question)
the picture on counterfeit island is a picture for when you go underground and you go on top of the ladder u fix the dragon the way it is on the picture
To get the underground paper on Counterfeit Island in Poptropica, you need to go into the underground tunnels underneath the museum area. Look for a grate on the ground that you can pry open with the crowbar item. Once you open the grate, go down into the tunnels and follow the path to find the underground paper.
after you get tied up there is a hatch on the roof