Note: Castrovalva // //
Castrovalva is the name of an early lithograph by the Dutch graphic artist M. C. Escher, and the design of the city in this serial reflects the impossible nature of many of Escher's later works. The story centres on the mathematical principle of recursion, a concept portrayed in much of Escher's artwork. Escher's lithograph depicts a town in Italy atop a steep slope, a setting similar to that of The Curse of Peladon, but there is nothing in the print itself to suggest the paradoxes of this story.
"Event One" appears to be a reference to the Big Bang – the creation of the universe. However, it is repeatedly described in this story as "the creation of the galaxy", which is believed to be a quiet, tranquil coalescing of hydrogen predating the first stars rather than a dramatic cosmic event.
|Author||Christopher H. Bidmead|
Doctor Who book:|
|16 June 1983|
An unabridged reading of the novelisation by Christopher H. Bidmead was released on CD on 4 March 2010 by BBC Audiobooks.
Castrovalva was released on VHS in March 1992. The cover, by Andrew Skilleter, in part drew upon the Escher print Relativity. The serial was released on DVD in the New Beginnings boxset on January 29, 2007 as part of a "Return of the Master" trilogy alongside The Keeper of Traken and Logopolis. The serial was released in issue 47 of the Doctor Who DVD Files, published 20 October 2010.