Quintarn

Quintarn is a planet in Ultima Segmentum, part of Ultramar. It is a Desert World, but at the same time an Agri World. It has huge domes built on the surface with vast water traps, capturing as much water as they can and storing it underground.

This is one of three agri-worlds in Ultramar, the others being Tarentus and Masali. Together, the planets are known as the 'Three Planets'.

The Three Planets were captured by Ork scavangers just after the battle against Hive Fleet Behemoth. Marneus Calgar led the forces of the Ultramarines to reconquer them.