Under Siege 2: Dark Territory is a 1995 American action thriller film directed by Geoff Murphy, starring Steven Seagal as the ex-Navy SEAL, Casey Ryback. Set on board a train traveling through the Rocky Mountains from Denver to Los Angeles, it is the sequel to the 1992 film Under Siege also starring Seagal. The title refers to the railroading term that the subject train was travelling through dark territory, a section of railroad track that has no train signals and in which communications between train dispatchers and the railroad engineers were impossible.

Geoffrey Peter Murphy was a New Zealand filmmaker, producer, director, and screenwriter best known for his work during the renaissance of New Zealand cinema that began in the second half of the 1970s. His second feature Goodbye Pork Pie (1981) was the first New Zealand film to win major commercial success on its soil. Murphy directed several Hollywood features during the 1990s, before returning to New Zealand as second-unit director on The Lord of the Rings film trilogy. Murphy was also a scriptwriter, special effects technician, schoolteacher and trumpet player at different times. He was married to Merata Mita, a film director, actor, writer.