The Madillon Cluster was a star cluster; Earth, which was twelve days hyperspace travel from the Third Zone, was located between the Zone and Madillon. (PROSE: The Two Doctors [+]Loading...["The Two Doctors (novelisation)"]) Samur was located in the Madillon Cluster. (AUDIO: Heroes of Sontar [+]Loading...["Heroes of Sontar (audio story)"])
In the 20th century the Sontarans planned a vital attack in the Cluster, with the Ninth Sontaran Battle Group staged there while Group Marshall Stike attempted to use the Kartz-Reimer module to gain time travel on Earth. (TV: The Two Doctors [+]Loading...["The Two Doctors (TV story)"])
A Sontaran sergeant still alive in 2371 had led troops in the Madillon Cluster before they were all wiped out. (PROSE: Lords of the Storm [+]Loading...["Lords of the Storm (novel)"])
The Madillon Cluster was one of the places the Sixth Doctor speculated as a possible location of dormant Cybermen after the Great Cyber War. (AUDIO: Last of the Cybermen [+]Loading...["Last of the Cybermen (audio story)"])
In his travels, Koschei was involved in "picking up the pieces" in a conflict in the Madillon Cluster. (PROSE: The Dark Path [+]Loading...["The Dark Path (novel)"])