For the individual of the same name, see Sarn.

Sarn was a volcanic planet which had been a colony of Trion. The Trions mainly used Sarn for its regenerating Numismaton Gas, but they began using it as a dumping ground for political prisoners.

The people of Sarn descended from a high-technology society into tribalism and superstition. They worshiped Logar, God of the Fire Mountain, and sacrificed unbelievers in fire.

When Turlough and the Fifth Doctor went to Sarn, Turlough sent a distress call to Trion, requesting assistance for the people, who were threatened by a volcanic eruption during the Time of Fire. (DW: Planet of Fire)

Behind the scenes Edit

• The Eleventh Doctor, through the Dream Lord's manipulation, visited a retirement home named S.A.R.N. in (DW: Amy's Choice), but it is not known whether this was connected in any respect to the planet Sarn. It is theoretically possible, since the Dream Lord was an aspect of the Doctor.