Preliumtarn is a planet that orbits the star Zarss in Galactic Sector QQ7 Active J Gamma. The planet is famous for its two mountain chains, Quentulus Quazgar and Sevorbeupstry.

In the Quentulus Quazgar mountains lies God's Final Message to his Creation in huge fiery letters, which Arthur, Marvin and Fenchurch visited in So Long, and Thanks for All the Fish and the Quandary Phase.