The Goonscape is a sympathetic history that exists just beyond the known universe.
There is no known way of contacting the inhabitants of the Goonscape directly. Its existence has been discovered through those objects that have fallen out of the Goonscape and into the known universe.
The best theory for how artifacts are collected from the Goonscape is the SusyGoon Pivot Hypothesis which states as follows: The Goonscape and the known universe pivot laterally parallel to one another at different rates. If points of analogous quantum symmetry meet, then artifacts “drop” through.
It is indeed fortunate that some of the objects that have dropped out of the Goonscape and into the known universe during modern times were history books themselves. Notably, The Broken Soil (ancient texts) and The Goon Scrolls (a collection of humorous goonchidren’s poetry). Both have been translated and treated in detail by this author in other publications.
It is suspected that items or people lost from our world may still exist in the Goonscape.