Derkein is the name of a city or a state on the planet Ashlar, where the ruling Ape Senate is based, and has its own grand Ape Army. This is the city to which Leo Davidson and the other humans captives are taken after he crash-lands on the alien planet. He soon escapes with the help of Ari.
- In the first treatment of William Broyles' story, Derkein is the name of the dominant empire of Ashlar, it's political, social and architectural structures based on those of the Roman Empire. In the first draft script of the film, Thade's military victory parade is compared to a mixture of ancient Rome and the Nuremberg rallies. Derkein is described as having the glistening marble structures of a classical city, unlike its appearance in the finished movie.
- No name was given on camera for the city of apes in the final 2001 film. However, the production artwork identifies the ape city as "Derkein". The name reappears for the ape city in the Dark Horse Comics series based in the same world of Tim Burton's Planet of the Apes.
- Derkein appears to be derived from a Greek word which gave the English word "dragon", and can also mean "seeing clearly".
- Annals of the Planet Ashlar Treatment, by William Broyles Jr. (4 August 1999)
- The Visitor First Draft Script, by William Broyles Jr. (24 September 1999)
- The Planet of the Apes Chronicles, by Paul A. Woods
|Planet of the Apes - The Chronicle of Ashlar|
|Planet of the Apes TB|
|Planet of the Apes (2001)|
|Leo Davidson | Ari | Thade | Attar | Krull | Limbo | Daena|
|Grace Alexander | Aspasia | Bon | Leeta | | Thade's Niece | Tuug | Karl Vasich | Woman in Cart | Zaius | Sandar | Nado | Nova | Pericles | Semos | Birn | Gunnar | Karubi | Tival|
|Ashlar | Calima | Oberon | Derkein|
|Comics, Novels & Magazines|
|The Human War | Planet Of The Apes (2001) Graphic Novel | Planet of the Apes (2001) (Junior Novelisation) | Planet of the Apes (2001) Concept Art & Costume Tests|
|Planet of the Apes (2001 Soundtrack Album)|