In The Colour of Magic, it is shown there is a net on the edge of the Disc when

Rincewind and Twoflower almost fall off the edge.

How big is this net? In The Light Fantastic on page 13 it mentions ships falling off the world, so I guess it isn’t complete.


Tethis (a sea troll) tells us about the Circumfence in The Colour of Magic. It's not small.

“It could be extended for a couple of miles, if you found enough rocks and things,” said the wizard.
“Ten thousands of miles. I just patrol this league.”
“That’s a third of the way around the Disc!”

You can see it on the authorised Discworld Mappe. Not quite a third.

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  • 1
    Oh, forgot that sentence – Stormblessed May 8 at 23:02

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