Hawksbill Station
In the mid-21st century, time travel is used to send political prisoners to Hawksbill Station, a prison camp in the late Cambrian Era. When the latest arrival suspiciously deflects questions about his crimes and knowledge of 'Up Front', the inmates decide to find out his secret. (This story was used as the basis of the novel "Hawksbill Station".) Nebula Award(R) Nominee, Hugo Award Nominee
Science fiction, American Science fiction, English Science fiction, Fiction, science fiction, general
Robert Silverberg
Robert Silverberg is an American author, best known for writing science fiction. He is a multiple winner of both the Hugo and Nebula Awards.

Silverberg received a Nebula award in 1986 for his novella Sailing to Byzantium, which takes its name from Yeats' poem; a Hugo in 1990 for Enter a Soldier. Later: Enter Another; and in 2004 he was named a Grand Master by the Science Fiction Writers of America.

([Source][1])


  [1]: http://en.wikipedia.org/wiki/Robert_Silverberg