the hay bales at the mill on the left go down
The dungeon on Astro-Knights Island in Poptropica is located inside the castle on the left side of the main room. You can access the dungeon by climbing down the ladder next to the statue of Mordred on the top level of the castle.
you get the key and unlock the door between the two hay bales and then you do down and jump on the owl.
Go back in and pull it. The dungeon will not be guarded until you pull the switch and take the cheese.
To defeat the phoenix on Astro Nights island you need to avoid the little bugs and clouds the when the phoenix pops up hold down the left mouse button and release the large energy boost. you need to do this three times. i hope this helped. ^^
You get a gold coin out of the fountain, then you go to Mordrid's place and click on a stack of books and you get a library slip, then you go to the castle's library and go to a shelf that says M&M You click on the crumpled paper above it and it opens the dungeon, you go down there and there is the moldy cheese.
you go to ice island and shoot the sharks with your laser then they will go down a black hole one at a time
Go back down and pull it. You need the gate open to reach the cell. (see the related question)
You get a gold coin out of the fountain, then you go to Mordrid's place and click on a stack of books and you get a library slip, then you go to the castle's library and go to a shelf that says M&M You click on the crumpled paper above it and it opens the dungeon, you go down there and there is the moldy cheese.
To enter the castle dungeon, you need the Library Slip. Get the gold coin from the fountain and enter the Mordred Museum. In a stack of books to the right is a Library Slip. When you go to the location in the library (McM, non-fiction), the scroll will open the secret stairway down to the dungeon. (see related question)
go down to the last floor and click on the book that is labeled m-s
Go back down into the laboratory, push down the mud wall, and go to the back gate of the dungeon cell. When the robot self-destructs, click on Merlin and then the fuel cell to recover it. (see the related question)
Go between the hay bales and use the key to go down into Mordred's laboratory. There is a wall of dirt, but you can push on it hard to knock it down. Feed the mouse to the owl and follow the path to the back of the dungeon. The alien will self destruct, but you can click on the owl, then the green rod, and he will retrieve it. (see related question)