Use the hovercraft (hover board) that is in the attic of the Mill.
The hovercraft will immediately move to its position on the swamp, the only place it can travel.
the swamp is past the wind mill in the mud
You have to push it open.
u just press on it
Reach and repair the saucer Excalibur in the mud swamp past the mill. (see related questions)
This means you have already completed the Arturus part of Astro Knights Island. Your spaceship should be parked on top of the castle if you return to the planet.
go to the mud with that ting like a hower board over the mud and you will find it in the mud
It goes to the mud swamp, which is the only place that you can use it.
Actually you are on the planet Poptropica, and to get into space you will need the crashed saucer Excalibur, in the mud field past the old mill.
yu dont yu get manure and use it tu get accross
The saucer Excalibur is crashed in the mud swamp to the right of the Mill.
In the underground lab of Mordred, there is a mud wall blocking your path. Push hard and it will fall down.
You can cross the mud swamp on Astro Knights Island by using the Hover Boots. These boots will allow you to move across the mud without sinking. You can find the Hover Boots in the Factory area of the island.