It, along with Kraken Catena, is located near Leviathan Patera, a major cryovolcanic feature; as such, Set Catena may have played a role in rift-induced cryovolcanic activity in Leviathan Patera.

Set Catena extends radially northwards from Leviathan Patera, terminating at another irregularly-shaped walled depression.

The pits may have formed from collapse or from explosive cryovolcanic eruptions, and may have been subsequently expanded by mass wasting processes.

[2][4] Set Catena may be a northeastern extension of Raz Fossae, a similar fault system southwest of Leviathan Patera.

[5] As with all other surface features of Triton, Set Catena was discovered when Voyager 2 visited the Neptune system on 25 August 1989.