The cheese is in the castle dungeon, under the library.
Get the gold coin from the fountain and enter the Mordred Museum. The Library Slip is in a stack of books there. Take the slip to the castle library (first floor, right) and press the scroll McM in the lower aisle, which opens the hidden stairway. Get the cheese and throw the switch.
you go inside, get the moldy cheese and pull the lever down.
In the Maid's room (castle first floor left) you will find a mechanical mouse.
Once you have built a new spaceship on Astro Knights Island, it will park on top of the castle whenever you leave the island.
you have to find the UFO in astro knights island.
you need the hovercraft,mouse,moldy cheese, owl,green glowy thing,coordinates, and find the broken paceship.
The only place is in the castle dungeon, below the library. (see related question)
its on top of the castle
To obtain the moldy cheese in Astro-Knights on Poptropica, you need to first find the rats in the secret dungeon. They will steal the moldy cheese from you, which you can then retrieve by using the Rat Trap item in your inventory.
IS IN DA LIBRARY... SOMWEAR.... and i dongt
Your ship never gets lost.
At the top of the ice mountain.
Find the old cheese. . Give the cheese to the mouse and give the mouse to the owl.