Interitus Cairn is a terrestrial planet orbiting the star Caelus. The planet has a type I atmosphere, and is capable of sustaining life. The planet comprises a wide range of biospheres, from vast deserts to lush jungles and features a vast lava sea. In regards to climate, the planet ranges between temperate and subtropical. The planet exhibits high seismic activity when compared to other worlds. It has two lifeless moons, Despir & Vigil. These moons strongly affect the oceans. Even the lava sea has been known to exhibit tidal patterns at specific points in the lunar cycles. There are also ruins of a High Republic Era Jedi waystation and enclave present on the planet.